31-12-2023 NGALA LODGE, GAMBIA - RAINBOW AGAMA (Agama agama)

The common agama, red-headed rock agama or rainbow agama (Agama agama) is a species of lizard from the family Agamidae found in most of sub-Saharan Africa. To clear up centuries of historical confusion based on Linnaeus and other authors, Wagner et al. designated a neotype (numbered ZFMK 15222) for the species, using a previously described specimen from Cameroon in the collection of the Zoologisches Forschungsmuseum Alexander Koenig in Bonn. The species name was formerly applied to a paraphyletic collection of taxa (a so-called wastebasket); subsequent mitochondrial DNA analysis of various populations indicates they represent separate species. Consequently, three former subspecies A. a. africana, A. a. boensis, and A. a. mucosoensis are now considered separate species, and A. a. savattieri is considered synonymous with A. africana. 

31-12-2023 NGALA LODGE, GAMBIA - SENEGAL COUCAL (Centropus senegalensis)

The Senegal coucal (Centropus senegalensis ) is a member of the cuckoo order of birds, the Cuculiformes, which also includes the roadrunners, the anis, and the hoatzin. It is a medium-sized member of its genus and is found in lightly-wooded country and savannah in central and southern Africa.

This is a medium-sized species at 39 cm (15 in). Its crown, nape and upper parts, bill, legs and long tail are black, the eyes are red, the wings are chestnut, and the underparts are creamy white, with blackish barring on the flanks. The sexes are similar, but juveniles are browner and more heavily barred above, with buff to cinnamon, barred and streaked underparts.

It is a widespread species distributed through much of central and southern Africa south of the Sahara Desert. The range extends from Senegal in the west to Ethiopia and Kenya in the east, and Angola and Congo to the south. A separate population in southern Africa is centred on Zambia, Zimbabwe and northern Botswana. The Senegal coucal is a bird of grassy habitats with trees, such as bushes and savannah.

31-12-2023 BAKAU, GAMBIA - BROAD BILLED ROLLER (Eurystomus glaucurus)

The broad-billed roller (Eurystomus glaucurus) is a member of the roller family of birds which breeds across tropical Africa and Madagascar in all but the driest regions. It is a wet season breeder, which migrates from the northern and southern areas of its range towards the moister equatorial belt in the dry season.

The broad-billed roller is 29–30 cm in length. It has a warm back and head, lilac foreneck and breast, with the rest of the plumage mainly brown. The broad bill is bright yellow. Sexes are similar, but the juvenile is a drabber version of the adult, with a pale breast. The broad-billed roller is striking in its strong direct flight, with the brilliant blues of the wings and tail contrasting with the brown back.

The call of the broad-billed roller is a snarling k-k-k-k-k-r-r-r-r-r sound.

This is a species of open woodland with some tall trees, preferably near water. These rollers often perch prominently on trees, posts or overhead wires, like giant shrikes.

They are inactive for most of the day, apart from chasing intruders, but in late afternoon they hunt for the swarming ants and termites on which they feed, sometimes in groups of 100 or more rollers. They drink like swallows, dipping their bills into water in flight.

This bird nests in an unlined hole in a tree cavity, laying 2-3 eggs.

31-12-2023 BAKAU, GAMBIA - CITRUS SWALLOWTAIL BUTTERFLY

Papilio demodocus, the citrus swallowtail or Christmas butterfly, is a swallowtail butterfly which commonly occurs over the entirety of sub-Saharan Africa, including Madagascar, besides the southern Arabian Peninsula. The caterpillars feed on various native plants of especially the family Rutaceae, but have also taken to the leaves of cultivated citrus trees.

Citrus swallowtails pass through approximately three generations per year.

Eggs

Female butterflies lay their eggs singly on citrus leaves. After about six days, the egg hatches into an immature larva.

Immature larva

The immature larvae are black, yellow, and white with spikes. Their coloration provides effective camouflage, as they resemble bird droppings. They grow to a length of 10 or 15 mm before changing into mature larvae.

Mature larva

Mature larvae are green with white or pink markings and eyespots. They grow to a maximum length of about 45 mm.

Mature caterpillars lack the camouflage of their immature state. Instead, when threatened by a bird or other predator, they produce a forked, orange-coloured organ known as an osmeterium. The organ emits a strong smell which acts as a discouragement to the predator. The larvae are sometimes known as 'orange dogs'.

Pupa

The caterpillars attach themselves to branches with silk, transforming into pupae. They remain in the pupal form for two to three weeks before emerging as adults.

Adult

Adult butterflies have black and yellow markings with red and blue eyespots. Female butterflies tend to be larger than males.

 

As with most butterflies, various predators, parasitoids and diseases attack Papilio demodocus, so that integrated pest management is generally the most rational approach to control of infestations, paying due attention to avoiding destruction of the populations of enemies. In particular parasitic wasps in the family Encyrtidae, such as some species of the genus Ooencyrtus develop in Papilio eggs. Other parasitoidal wasps in families such as Chalcididae and Braconidae (for example genus Apanteles) attack the larvae, and Pteromalidae (for example genus Pteromalus) are parasitoids of the pupae. Predatory insects such as certain Heteroptera, in particular Reduviidae known as assassin bugs, and some Pentatomidae attack the larvae, and certain Mantodea such as genus Sphodromantis attack both larvae and adults.

28-12-2023 TENDABA, GAMBIA - BLUE BELLIED ROLLER (Coracias cyanogaster)

The blue-bellied roller (Coracias cyanogaster) is a member of the roller family of birds which breeds across Africa in a narrow belt from Senegal to northeast Democratic Republic of the Congo. It is resident, apart from some local seasonal movements, in mature moist savannah dominated by Isoberlinia trees.

The blue-bellied roller is a large bird, nearly the size of a jackdaw at 28–30 cm (11–12 in). It has a very dark brown back, buffy or chalky white head, neck and breast, with the rest of the plumage mainly blue. Adults have 6 cm (2.4 in) tail streamers. Sexes are similar, but the juvenile is a drabber version of the adult.

The blue-bellied roller is striking in its strong direct flight, with the brilliant blues of the wings contrasting with the dark back and cream colored head, and the tail streamers trailing behind.

The call of blue-bellied roller is a harsh clicking ga-ga-ga sound.

This is a common bird of warm open country with some trees. These rollers often perch prominently on trees, posts, or overhead wires, like giant shrikes, whilst watching for the grasshoppers and other large insects on which they feed.

The display of this bird is a lapwing-like display, with the twists and turns that give this species its English name. It nests in a hole in a tree - a tree cavity. 

30-12-2023 BAKAU, GAMBIA - YELLOW BILLED KITE (Milvus migrans ssp. parasitus)

The yellow-billed kite (Milvus aegyptius) is the Afrotropic counterpart of the black kite (Milvus migrans), of which it is most often considered a subspecies. However, DNA studies suggest that the yellow-billed kite differs significantly from black kites in the Eurasian clade, and should be considered as a separate, allopatric species.

The yellow-billed kite was formally described in 1788 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He specified that the bird was found in Egypt, placed it with the eagles, falcons and relatives in the genus Falco and coined the binomial name Falco aegyptius. Unusually Gmelin did not cite a source for his information. The yellow-billed kite is now one of three kites placed in the genus Milvus that was introduced in 1799 by the French naturalist Bernard Germain de Lacépède.

There are two subspecies: M. a. parasitus (Daudin, 1800) , found throughout most of sub-Saharan Africa (including Madagascar), except for the Congo Basin (with intra-African migrations) and M. a. aegyptius (Gmelin, JF, 1788) of Egypt, south-west Arabia and the Horn of Africa (which disperses south during the non-breeding season).

The yellow-billed kite was formerly considered as conspecific with the black kite (Milvus migrans). A molecular phylogenetic study published in 2005 compared DNA sequences of two mitochondrial loci of the red, black and yellow-billed kites. It found that there was significant divergence between the three species, but unexpectedly, the two clades corresponding to the M. a. aegyptius and M. a. parasitus subspecies did not form a monophyletic group.

 As suggested by its name, the yellow-billed kite is easily recognized by its entirely yellow bill, unlike that of the black kite (which is present in Africa as a visitor during the North Hemisphere winter). However, immature yellow-billed kites resemble the black kites of the corresponding age.

They are found in almost all habitats, including parks in suburbia, but rare in the arid Namib and Karoo. They feed on a wide range of small vertebrates and insects, much of which is scavenged.

31-12-2023 NGALA LODGE, GAMBIA - SPECKLED PIGEON (Columba guinea)

The speckled pigeon (Columba guinea), also African rock pigeon or Guinea pigeon, is a pigeon that is a resident breeding bird in much of Africa south of the Sahara. It is a common and widespread species in open habitats over much of its range, although there are sizable gaps in its distribution. It is sometimes referred to as the Guinea pigeon due to its similar coloring to some species of guineafowl.

This is a large pigeon at 41 cm in length. Its back and wings are rufous, the latter heavily speckled with white spots. The rest of the upperparts and underparts are blue-grey, and the head is grey with red patches around the eye. The neck is brownish, streaked with white, and the legs are red. Sexes are similar, but immatures are browner than adults and lack the red eye patches. The call is a loud doo-doo-doo.

31-12-2023 NGALA LODGE, GAMBIA - FORK TAILED DRONGO (Dicrurus adsimilis)

The fork-tailed drongo (Dicrurus adsimilis), also called the common drongo or African drongo, is a small bird found from the Sahel to South Africa that lives in wooded habitats, particularly woodlands and savannas. They are part of the family Dicruridae and have four recognized subspecies, D. a adsimilis, D. a. apivorus, D. a. fugax and D. a. jubaensis. Like other drongos, the fork-tailed is mostly insectivorous; its diet mainly consists of butterflies, termites, and grasshoppers.

Physically, this species is characterized with a narrow fork-shaped tail, red-brownish eyes, and black plumage throughout all of its body.

The fork-tailed drongo is known for its ability to deceptively mimic other bird alarm calls in order for a certain animal to flee the scene so it can steal their food (kleptoparasitism). They are also notorious for displaying an aggressive and fearless behaviour by attacking and chasing off much larger animals, including birds of prey, when their nest or young are threatened. Due to its extensive range and stable population, the fork-tailed drongo is classified by the IUCN Red List as a least-concern species.

The fork-tailed drongo is a common and widespread resident breeder in Africa south of the Sahara. These insect-eating birds are usually found in open woodland, savanna and forest edge and are tolerant of arid climates. Its range was formerly considered to include Asia, but the Asian species is now called the black drongo (D. macrocercus). The bird can be found at heights as high as 2200 meters.

The bird has a robust black beak and red eyes. Young birds are born without feathers, with reddish skin, an orange mouth, yellow gape flanges, brown eyes and a black beak. Adolescent birds are dark brown with a few buff-colored feather tips, less defined tail fork, brown or grey eyes, and a pale-colored mouth. They look similar to adults but lack shine on the lower body and have pale feathers on certain parts. Both males and females have black bodies with a blue-green sheen on certain areas. The belly and lower body are entirely black in contrast to the glossy black-blue upper body. The long tail is deeply forked and black. The tail measures around 115–126 mm in length and 19–23 mm in depth. They have short legs and a wingspan of 134 mm. These birds have a bill depth of 0,4 mm and a bill length of 2.8 mm.

After breeding, adult birds undergo a full molt, typically occurring from December to March in Southern Africa and varying months in other regions. Young birds retain their immature plumage until the next breeding season. The post-juvenile molt is a partial process that begins before the growth of new wing and tail feathers after the nesting period. Leucism has been spotted in the fork-tailed drongo.

 This specie is mostly insectivorous and occasionally eats fishes and other birds, furthermore they may take nectar and eat plants when available too. Predominant preyed animals are butterflies, beetles, caterpillars, grasshoppers, honey bees, moths, termites and weevils, especially common species being the angola white lady, macrotermes natalensis, cyrtacanthacris aeruginosa, and the desert locust. Sometimes they might also eat small fishes by swooping down from a perch hovering over water and dipping, it has been observed small birds being captured with their claws or bills, namely the bronze mannikin. Plants take around 15% of their diet, usually eaten are the moringa oleifera, azadirachta indica and the dialium guineense. These birds are solitary in its hunting. This species spends about 62% of the day feeding during the dry season, and 56% of the day during rainy seasons.

Usually, the fork-tailed drongo perches, from a height of 5 m (16 ft 5 in) to 7 m (22 ft 11+1⁄2 in), in an erect pose from which they rapidly charge insects flycatching, plunge diving or grabbing it on the ground and then return to the same branch. The specie can hold large items with their claws and tear them with their bills; removes wings of butterflies. They frequent savanna fires, where they catch fleeing insects and other prey running from the flames. These birds have a commensalist relationship with large mammals, following animals such as elephants and giraffes that disturb insects from the surrounding area, flushing out the prey.

Kleptoparasitism

A common employed tactic by the fork-tailed drongo to get food is kleptoparasitism. The drongo will give genuine alarm calls to alert the presence of predators to other animals, but sometimes it will give a false alarm call to displace those animals and steal their food. These birds may also outright attack other species or do so after a false alarm failed.

It has been observed that fork-tailed drongos spend a quarter of their time following other animals. Species, such as southern pied babblers, sociable weavers, wattled starlings and meerkats that forage on the ground are frequent victims of the fork-tailed kleptoparasitism, because the drongos don't possess the appropriate morphological adaptations to hunt certain preys that are more nutritious and calorific so they use kleptoparasitism. These birds frequently take the lead in mixed-species foraging flocks, acting as sentinels alongside to other species. This strategy reduces the risk of predation and enhances foraging success of these associated species. Simultaneously, the drongo capitalizes on these associations to increase opportunities for kleptoparasitism.

Though in doubt, researchers have considered the possibility that these drongos possess theory of mind, not fully shown in any animal other than humans.Approximately a quarter of their food intake is estimated to come from kleptoparasitism, and an additional 10% is acquired by capturing prey flushed by associating species. Moreover, the prey caught using this strategy are typically larger than those acquired through self-foraging. In response to a false alarm, the drongo will issue an 'all clear' call and escalate the rate of true alarms to counteract the effects of its manipulation.

31-12-2023 ATLANTIC BLV, GAMBIA - RED BILLED FIREFINCH (MALE) (Lagonosticta senegala)

The red-billed firefinch or Senegal firefinch (Lagonosticta senegala) is a small seed-eating bird in the family Estrildidae. This is a resident breeding bird in most of Sub-Saharan Africa with an estimated global extent of occurrence of 10,000,000 km2. It was introduced to Egypt, but the population there has become extinct. It was also introduced to southern Algeria where it is currently expanding northward.

The red-billed firefinch is 10 cm (3.9 in) in length. The adult male has entirely scarlet plumage apart from brown wings. The bill is pink, and there is a yellow eye-ring. Females have uniformly brown upperparts and buff underparts. There is a small red patch in front of both eyes, with the bill also being pink.

This widespread and abundant species is often found around human habitation, often with other species such as the red-cheeked cordon-bleu. Its soft queet-queet call is a familiar African sound. The song is a rising chick-pea-pea-pea.

The red-billed firefinch is a small gregarious bird which feeds mainly on grain and other seeds. It frequents open grassland and cultivation. The nest is a large domed grass structure with a side entrance, built low in a bush, wall or thatch into which three to six white eggs are laid. The nest of this species is parasitised by the village indigobird.

31-12-2023 ATLANTIC BLV, GAMBIA - RED BILLED FIREFINCH (FEMALE) (Lagonosticta senegala)

The red-billed firefinch or Senegal firefinch (Lagonosticta senegala) is a small seed-eating bird in the family Estrildidae. This is a resident breeding bird in most of Sub-Saharan Africa with an estimated global extent of occurrence of 10,000,000 km2. It was introduced to Egypt, but the population there has become extinct. It was also introduced to southern Algeria where it is currently expanding northward.

The red-billed firefinch is 10 cm (3.9 in) in length. The adult male has entirely scarlet plumage apart from brown wings. The bill is pink, and there is a yellow eye-ring. Females have uniformly brown upperparts and buff underparts. There is a small red patch in front of both eyes, with the bill also being pink.

This widespread and abundant species is often found around human habitation, often with other species such as the red-cheeked cordon-bleu. Its soft queet-queet call is a familiar African sound. The song is a rising chick-pea-pea-pea.

The red-billed firefinch is a small gregarious bird which feeds mainly on grain and other seeds. It frequents open grassland and cultivation. The nest is a large domed grass structure with a side entrance, built low in a bush, wall or thatch into which three to six white eggs are laid. The nest of this species is parasitised by the village indigobird.

31-12-2023 ATLANTIC BLV, GAMBIA - MOURNING COLLARED DOVE (Streptopelia decipiens)

The mourning collared dove or African mourning dove (Streptopelia decipiens) is a dove which is a widespread resident breeding bird in Africa south of the Sahara. Despite its name, it is not related to the North American mourning dove (Zenaida macroura). This species is common or abundant near water. They often mingle peacefully with other doves.

The mourning collared dove is a largish, stocky pigeon, up to 31 cm in length. Its back, wings and tail are pale brown. The head is grey and the underparts are pink, shading to pale grey on the belly. There is a black hind neck patch edged with white. The legs and a patch of bare skin around the eye are red.

When flying, it shows blackish flight feathers and extensive white in the tail, the latter being a distinction from the similar but larger red-eyed dove. The call is a fast krrrrrrrr, oo-OO, oo.

Sexes are similar, but immatures are duller than adults, and have scalloping on the body feathers. 

31-12-2023 ATLANTIC BLV, GAMBIA - COMMON BULBUL (Pycnonotus barbatus)

The common bulbul (Pycnonotus barbatus) is a member of the bulbul family of passerine birds. It is found in north-eastern, northern, western and central Africa.

The common bulbul was originally described in the genus Turdus. Some authorities treat the Somali, Dodson's and dark-capped bulbul as subspecies of the common bulbul. The common bulbul is considered to belong to a superspecies along with the Himalayan bulbul, white-eared bulbul, white-spectacled bulbul, African red-eyed bulbul, and the Cape bulbul. Alternate names for the common bulbul include the black-eyed bulbul, brown bulbul (also used for the Asian red-eyed bulbul), brown-capped geelgat, common garden bulbul, garden bulbul and white-vented bulbul as well as one name used for another species (yellow-vented bulbul).

The Common Bulbul is a bird smaller than the Blackbird and especially slimmer. It also has a large tail, but the overall appearance is different.

The plumage is plain, without any striking characteristic and there is no sexual dimorphism. The female is only slightly smaller.

Upper parts are medium-brown with hints of fawn. The head is hooded in dark brown, the face becoming almost black and includes an eye, also black. The beak is black, strong and slightly curved in appearance. Remiges and rectrices are a darker brown, appearing blackish in low light. The tail exceeds the short wings greatly. Robust black legs.

Lower parts are whitish to beige-brown depending on illumination, sometimes with a chestnut-brown plastron on the chest, with the rear sides marked in russet-brown. The undertail covert are almost white and constitutes the lightest part of the body.

The silhouette in flight and the flight itself are quite characteristic: long tail, short rounded wings, yet flight is fast and direct with emphasis beating, very different to a large thrush. And in the tree-filled habitat, there are no other species to confuse it with, except a few other bulbuls on the margins of its range (see further). Furthermore it is very vocal, which facilitates detection.

31-12-2023 ATLANTIC BLV, GAMBIA - BEAUTIFUL SUNBIRD (MALE) (Cinnyris pulchellus)

The beautiful sunbird (Cinnyris pulchella), formerly placed in the genus Nectarinia, is a sunbird. It is native to tropical Africa, its range extending from Senegal and Guinea in the west to Sudan, South Sudan, Ethiopia, Tanzania and Kenya in the east.

Beautiful sunbirds are tiny, only 10 cm (4 in) long, although the breeding male's long tail adds another 5 cm (2 in). They have medium-length thin down-curved bills and brush-tipped tubular tongues, both of which are adaptations to their nectar feeding. The male has a black head, bright metallic green upper parts, scarlet breast bordered with yellow and black belly. The central feathers of the teal are greatly elongated. The female is brown above with yellowish underparts.

The beautiful sunbird occurs in Benin, Burkina Faso, Cameroon, Central African Republic, Chad, Democratic Republic of the Congo, Côte d'Ivoire, Eritrea, Ethiopia, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, South Sudan, Sudan, Tanzania, Togo and Uganda. This species is found in a variety of open habitats with some trees, including savannah, riverside thickets, mangroves, beachsides and gardens.

28-12-2023 TENDABA, GAMBIA - ABYSSINIAN ROLLER (Coracias abyssinicus)

The Abyssinian roller (Coracias abyssinicus), or Senegal roller, is a member of the roller family of birds which breeds across tropical Africa in a belt south of the Sahara, known as the Sahel. It is resident in the southern part of its range, but northern breeding populations are short-distance migrants, moving further south after the wet season.

The Abyssinian roller is a large bird, nearly the size of a jackdaw at 28–30 cm (11–12 in). It has a warm brown back, with the rest of the plumage mainly blue. Adults have 12 cm (4.7 in) long tail streamers. Sexes are similar, but the juvenile is a drabber version of the adult. Abyssinian roller is striking in its strong direct flight, with the brilliant blues of the wings contrasting with the brown back and the long tail streamers trailing behind. The call of the Abyssinian roller is a harsh crow-like gak sound, or a screeched aaaargh.

The Abyssinian roller is native to tropical Africa. Its range extends from southern Mauritania and Senegal in the west and to Ethiopia, Somalia and northern Kenya in the east. It also occurs in south-western Saudi Arabia and western Yemen. This is a common bird of warm open country with some trees, and has adapted to farmland and human habitation.

Abyssinian rollers often perch prominently on trees, posts or overhead wires, like giant shrikes, whilst watching for the large insects and small rodents on which they feed. They will dash into the smoke of a forest fire for disturbed invertebrates. They are fearless, and will dive and roll at humans and other intruders. The display of this bird is a lapwing-like display, with the twists and turns that give this group its English name. It nests in a scantily lined hole in a tree or building, and lays three to six eggs.

28-12-2023 TENDABA, GAMBIA - CAESER WEED (Urena lobata)

Urena lobata, commonly known as Caesarweed or Congo jute, is a tender perennial, variable, erect, ascendant shrub or subshrub measuring up to 0.5 meters (1.6 ft) to 2.5 meters (8.2 ft) tall. The stems are covered with minute, star-like hairs and often tinged purple. Considered a weed, it is widely distributed in the tropics, including in Brazil and Southeast Asia.

 Each individual plant grows as a single stalk that freely sends out bushy stems. The leaf shape is palmately lobed (having lobes that spread out like fingers on a hand). Like the stem, the leaves also have tiny hairs. Flowers of the plant are pink-violet and grow one centimeter in width. The fruit is also hairy and may stick to clothing or fur. 

The plant can invade areas of ecological disturbance as well as eroded places, crop plantations, and pastures. Caesarweed is considered an invasive species in the state of Florida, United States. There it grows as an annual in most areas except for in the southern region, where it may live perennially. In Florida, the plant has been reported to grow rapidly from 0.5 meters (1.6 ft) to 2 meters (6.6 ft) by the end of its first year of growth. The plant is not competitive in tall grasses or under canopies.

The University of Florida's pest management procedures for handling this plant include prevention through treating before seeds form and maneuvering vehicles to avoid driving near Caesarweed, mulching and shading to prevent germination, and the use of chemical herbicides.

28-12-2023 TENDABA, GAMBIA - GINGER LEAF MORNING GLORY (Ipomoea asarifolia)

Ipomoea asarifolia, the ginger-leaf morning-glory, is a species of plant in the family Convolvulaceae, of the genus Ipomoea. 

28-12-2023 NJAU, GAMBIA - COLLARED PRATINCOLE (Glareola pratincola)

The collared pratincole (Glareola pratincola), also known as the common pratincole or red-winged pratincole, is a wader in the pratincole family, Glareolidae. As with other pratincoles, it is native to the Old World.

This pratincole is 24–28 cm (9.4–11.0 in) long with a 60–70 cm (24–28 in) wingspan. It has short legs, long pointed wings, a long forked tail, and a short bill, which is an adaptation to aerial feeding. The back and head are brown, and the wings are brown with darker flight feathers. The belly is white. The underwings are chestnut, but look dark below.

Very good views are needed to distinguish this species from other pratincoles, such as the black-winged pratincole and the oriental pratincole, which may occur in its range. The latter species also has a chestnut underwing, but is shorter-tailed.

The collared pratincole is a bird of open country, and is often seen near water in the evening, hawking for insects. It is found in the warmer parts of Europe, southwest Asia and Africa. It is migratory, wintering in tropical Africa, and is rare north of the breeding range. 

30-12-2023 BAKAU, GAMBIA - BLACK HEADED HERON (Ardea melanocephala)

The black-headed heron (Ardea melanocephala) is a wading bird of the heron family Ardeidae, common throughout much of sub-Saharan Africa and Madagascar. It is mainly resident, but some west African birds move further north in the rainy season.

This species usually breeds in the wet season in colonies in trees, reedbeds or cliffs. It builds a bulky stick nest, and lays 2–4 eggs.

It often feeds in shallow water, spearing fish or frogs with its long, sharp bill. It will also hunt well away from water, taking large insects, small mammals, and birds. It will wait motionless for its prey, or slowly stalk its victim.

The black-headed heron is a large bird, standing 85 cm tall, and it has a 150 cm wingspan. It is nearly as large as the grey heron, which it resembles in appearance, although it is generally darker. Its plumage is largely grey above, and paler grey below. It has a powerful dusky bill.

The flight is slow, with the neck retracted. This is characteristic of herons and bitterns, and distinguishes them from storks, cranes, and spoonbills, which extend their necks. The white underwing coverts are striking in flight.

The call is a loud croaking.

28-12-2023 NJAU, GAMBIA - CHESTNUT BACKED SPARROW LARK (MALE)

The chestnut-backed sparrow-lark (Eremopterix leucotis) is a passerine bird which is a resident breeder in Africa south of the Sahara Desert.

The chestnut-backed sparrow-lark was originally placed in the genus Loxia. It was later moved to the Lark family Alaudidae under the genus Eremopterix which includes all other sparrow-lark species. Alternate names for this species include: chestnut-backed finch-lark and white-cheeked sparrow-lark.

This lark is a bird of open dry habitats such as open grassland and arid savanna, preferring recently burned turf, open fields, and gravel plains. They shuffle along in bare patches foraging for seeds and insects. They are both resident and nomadic, although movements are poorly understood. It is often found in mixed flocks with Chestnut-headed Sparrow-Lark where their ranges overlap in NE Africa.

It nests on the ground and lays one egg. Its food is insects and seeds.

 

28-12-2023 NJAU, GAMBIA - SENEGAL THICK NEE (Burhinus senegalensis)

The Senegal thick-knee (Burhinus senegalensis) is a stone-curlew, a group of waders in the family Burhinidae. Their vernacular scientific name refers to the prominent joints in the long yellow or greenish legs.

It is a resident breeder in Africa between the Sahara and the equator, and in the Nile valley.

Senegal thick-knees are medium-large waders with strong black and yellow black bills, large yellow eyes — which give them a reptilian appearance — and cryptic plumage. They are similar but slightly smaller than the Eurasian stone-curlew, which winters in Africa. The long dark bill, single black bar on the folded wing, and darker cheek stripe are distinctions from the European species. Senegal thick-knee is striking in flight, with a broad white wing bar.

This species has a preference for dry open habitats with some bare ground, preferably near water. It lays two blotchy light brown eggs on a ground scrape. It is most active at dawn and dusk. The song is a loud pi-pi-pi-pi-pi-pi-pi.

Food is insects, crustaceans and other invertebrates. It will also take other small prey. 

28-12-2023 NJAU, GAMBIA - NAMAQUA DOVE (JUVENILE)

The Namaqua dove (Oena capensis) is a small pigeon. It is the only species in the genus Oena. It is found over much of Sub-Saharan Africa as well as Arabia and Madagascar.

The Namaqua dove is a tiny sparrow-sized pigeon, typically 22 cm in length with a 28–33 cm wingspan, and weighing 40g. It has a very long black tapered tail, and the size and shape have led to comparison with the budgerigar. The plumage is mostly grey apart from a white belly, and chestnut primary feathers which are visible in flight.

The adult male has a yellow and red beak and a black face, throat and breast. The adult female lacks the black and has a red-based grey bill. Young birds are dark blotched on the wings and shoulders, and otherwise resemble the females.

The song is a quiet, short, double hoo, higher on the longer second note kuh-whooo, mournful and frequently repeated.

28-12-2023 NJAU, GAMBIA - CHESTNUT BACKED SPARROW LARK (Eremopterix leucotis) (FEMALE)

The chestnut-backed sparrow-lark (Eremopterix leucotis) is a passerine bird which is a resident breeder in Africa south of the Sahara Desert.

The chestnut-backed sparrow-lark was originally placed in the genus Loxia. It was later moved to the Lark family Alaudidae under the genus Eremopterix which includes all other sparrow-lark species. Alternate names for this species include: chestnut-backed finch-lark and white-cheeked sparrow-lark.

Five subspecies are recognized:

Senegal chestnut-backed finch-lark (E. l. melanocephalus) - (Lichtenstein, MHK, 1823): Originally described as a separate species in the genus Alauda. Found from Senegal and Gambia to central Sudan

E. l. leucotis - (Stanley, 1814): Found in southern and eastern Sudan, Eritrea, Ethiopia and northwestern Somalia

East African chestnut-backed finch-lark (E. l. madaraszi) - (Reichenow, 1902): Found from southern Somalia and Kenya to northern Malawi and northern Mozambique

E. l. hoeschi - White, CMN, 1959: Found from southern Angola and northern Namibia to western Zimbabwe

South African chestnut-backed finch-lark (E. l. smithi) - (Bonaparte, 1850): Found from southern Zambia and southern Malawi to eastern South Africa.

This is a small lark at 11 cm. The male is striking, with solid black underparts and head apart from brilliant white patches on the nape and behind the eyes. The upperparts and wings are chestnut with some dark streaking. The thick bill is grey.

The female chestnut-backed sparrow-lark is a drabber bird with heavily streaked buff-white underparts and head, and a white nape collar. The upperparts are chestnut with mottling. Young birds are like the female.

This lark is a bird of open dry habitats such as open grassland and arid savanna, preferring recently burned turf, open fields, and gravel plains. They shuffle along in bare patches foraging for seeds and insects. They are both resident and nomadic, although movements are poorly understood. It is often found in mixed flocks with Chestnut-headed Sparrow-Lark where their ranges overlap in NE Africa.

28-12-2023 NJAU, GAMBIA - SPUR WINGED LAPWING (Vanellus spinosus)

The spur-winged lapwing or spur-winged plover (Vanellus spinosus) is a lapwing species, one of a group of largish waders in the family Charadriidae.

It is one of several species of wader supposed to be the "trochilus" bird said by Herodotus to have been involved in an unattested cleaning symbiosis with the Nile crocodile.

The spur-winged lapwing breeds around the eastern Mediterranean, and in a wide band from sub-Saharan west Africa to Arabia. The Greek and Turkish breeders are migratory, but other populations are resident. The species is declining in its northern range, but is abundant in much of tropical Africa, being seen at almost any wetland habitat in its range. The spur-winged lapwing is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds applies.

In eastern and southern Africa the species has seen a range increase, entering Zambia for the first time in 1999 and spreading south and west.

These are conspicuous and unmistakable birds. They are medium-large waders with black crown, chest, foreneck stripe and tail. The face, the rest of the neck and belly are white and the wings and back are light brown. The bill and legs are black. Its striking appearance is supplemented by its noisy nature, with a loud did-he-do-it call. The bird's common name refers to a small claw or spur hidden in each of its wings.

This species has a preference for marshes and similar freshwater wetland habitats. The food of the spur-winged lapwing is insects and other invertebrates, which are picked from the ground.

It lays four blotchy yellowish eggs on a ground scrape. The spur-winged lapwing is known to sometimes use the wing-claws in an attack on animals and, rarely, people, who get too close to the birds' exposed offspring.

The "spur-winged plover" was identified by Henry Scherren as the "trochilus" bird said by the Greek historian Herodotus[3] to be involved in what would now be called a cleaning symbiosis with the Nile crocodile. However, there is no reliable evidence that this or any other species in fact has such a relationship, although Cott does record that spur-winged plovers are the birds that most often feed around basking crocodiles, and are tolerated by them.