Monday, 21 January 2019
16-1-2019 BIOPARC, VALENCIA - MARABOU STORK (Leptoptilos crumenifer)
The marabou stork (Leptoptilos crumenifer) is a large wading bird in the stork family Ciconiidae native to sub-Saharan Africa. It breeds in both wet and arid habitats, often near human habitation, especially landfill sites. It is sometimes called the "undertaker bird" due to its shape from behind: cloak-like wings and back, skinny white legs, and sometimes a large white mass of "hair". It has often been credited with the largest wingspan of any land bird, with an average of 2.6 metres (8.5 ft) and some recorded examples of up to 3.2 metres (10 ft).
The common name marabou is thought to be derived from the Arabic word murābit meaning quiet or hermit-like. The species was originally described as Ciconia crumenifera. When the species was moved into the genus Leptoptilos, the ending was modified to crumeniferus and this was used by many authors until it was noted that the correct masculine ending to match the genus is crumenifer.
The marabou stork is a massive bird: large specimens are thought to reach a height of 152 centimetres (5 feet) and a weight of 9 kg (20 lb). A wingspan of 3.7 m (12 ft) was accepted by Fisher and Peterson, who ranked the species as having the largest wing-spread of any living bird. Even higher measurements of up to 4.06 m (13.3 ft) have been reported, although no measurement over 3.20 m (10.5 ft) has been verified.[citation needed] It is often credited with the largest spread of any landbird, to rival the Andean condor; more typically, however, these storks measure 225–287 cm (7–9 ft) across the wings, which is about a foot less than the average Andean condor wingspan and nearly two feet less than the average of the largest albatrosses and pelicans. Typical weight is 4.5–8 kg (10–17.5 lb), unusually as low as 4 kg (9 lb), and length (from bill to tail) is 120 to 130 cm (47 to 51 in). Females are smaller than males. Bill length can range from 26.4 to 35 cm (10.5 to 14 in). Unlike most storks, the three Leptoptilos species fly with the neck retracted like a heron.
The marabou is unmistakable due to its size, bare head and neck, black back, and white underparts. It has a huge bill, a pink gular sac at its throat (crumenifer(us) means "carrier of a pouch for money"), a neck ruff, and white legs and black wings. The sexes are alike, but the young bird is browner and has a smaller bill. Full maturity is not reached for up to four years.
Like most storks, the marabou is gregarious and a colonial breeder. In the African dry season (when food is more readily available as the pools shrink), it builds a tree nest in which two or three eggs are laid. It is known to be quite ill-tempered.
It also resembles other storks in that it is not very vocal, but indulges in bill-rattling courtship displays. The throat sac is also used to make various noises at that time.
The marabou stork breeds in Africa south of the Sahara. In East Africa, the birds interact with humans and breed in urban areas. In southern African countries, the birds breed mainly in less populated areas. The marabou stork breeds in colonies, starting during the dry season. The female lays two to three eggs in a small nest made of sticks; eggs hatch after an incubation period of 30 days. Their young reach sexual maturity at 4 years of age. Lifespan is 43 years in captivity and 25 years in wild.
16-1-2019 BIOPARC, VALENCIA - COYPU (Myocastor coypus)
The nutria (/ˈnjuːtriə/) or coypu (/ˈkɔɪpuː/) (Myocastor coypus) is a herbivorous, semiaquatic rodent from South America. Classified for a long time as the only member of the family Myocastoridae, Myocastor has since been included within Echimyidae, the family of the spiny rats. The nutria lives in burrows alongside stretches of water and feeds on river plant stems.
Originally native to subtropical and temperate South America, it was introduced to North America, Europe and Asia, primarily by fur farmers. Although it is still hunted and trapped for its fur in some regions, its destructive burrowing and feeding habits often bring it into conflict with humans, and it is considered an invasive species in the United States. Nutria also transmit various diseases to humans and animals, mainly through water contamination.
The nutria somewhat resembles a very large rat, or a beaver with a small, long and skinny hairless tail. Adults are typically 4–9 kg (9–20 lb) in weight, and 40–60 cm (16–24 in) in body length, with a 30 to 45 cm (12 to 18 in) tail. It is possible for nutria to weigh up to 16 to 17 kg (35 to 37 lb), although adults usually average 4.5 to 7 kg (10 to 15 lb). Nutria have three sets of fur. The guard hairs on the outer coat are three inches long. They have coarse, darkish brown midlayer fur with soft dense grey under fur, also called the nutria. Three distinguishing features are a white patch on the muzzle, webbed hind feet, and large, bright orange-yellow incisors. They have approximately 20 teeth with four large incisors that grow during the entirety of their lives. The orange discoloration is due to pigment staining from the mineral iron in the tooth enamel. Nutria have prominent four inch long whiskers on each side of their muzzle or cheek area. The mammary glands and teats of female nutria are high on her flanks, to allow their young to feed while the female is in the water. There is no visible distinction between male and female nutria. Both are similar in coloring and weight.
A nutria is often mistaken for a muskrat (Ondatra zibethicus), another widely dispersed, semiaquatic rodent that occupies the same wetland habitats. The muskrat, however, is smaller and more tolerant of cold climates, and has a laterally flattened tail it uses to assist in swimming, whereas the tail of a nutria is round. It can also be mistaken for a small beaver, as beavers and nutria have very similar anatomies and habitats. However, beavers' tails are flat and paddle-like, as opposed to the round tails of nutria.
21-1-2019 TORMOS, ALICANTE - ALMOND BLOSSOM (Prunus dulcis)
The almond (Prunus amygdalus, syn. Prunus dulcis (Mill.) D.A.Webb, nom. illeg. non Prunus dulcis Rouchy) is a species of tree from the genus Prunus. Along with the peach, it is classified in the subgenus Amygdalus, distinguished from the other subgenera by corrugations on the shell (endocarp) surrounding the seed.
The fruit of the almond is a drupe, consisting of an outer hull and a hard shell with the seed, which is not a true nut. Shelling almonds refers to removing the shell to reveal the seed. Almonds are sold shelled or unshelled. Blanched almonds are shelled almonds that have been treated with hot water to soften the seedcoat, which is then removed to reveal the white embryo. Once almonds are cleaned and processed, they can be stored for around a year if kept refrigerated; at higher temperatures they will become rancid more quickly. Almonds are used in many cuisines, often featuring prominently in desserts, such as marzipan.
The almond tree prospers in a moderate Mediterranean climate with cool winter weather. It is rarely found wild in its original setting. Almonds were one of the earliest domesticated fruit trees, due to the ability to produce quality offspring entirely from seed, without using suckers and cuttings. Evidence of domesticated almonds in the Early Bronze Age has been found in the archeological sites of the Middle East, and subsequently across the Mediterranean region and similar arid climates with cool winters.
California produces about 80% of the world's almond supply. Due to high acreage and water demand for almond cultivation, and need for pesticides, California almond production may be unsustainable, especially during the persistent drought and heat from climate change in the 21st century. Droughts in California have caused some producers to leave the industry, leading to lower supply and increased prices.
21-1-2019 TORMOS, ALICANTE - PLANTAIN FAMILY (Antirrhinum controversum)
Antirrhinum controversum is a species of perennial flowering plant in the genus Antirrhinum (common snapdragons) in the family Plantaginaceae. Native to southeastern and southern Spain, Portugal, and northern Morocco, it is a subshrub that favors subtropical biomes. The species produces stems that grow between 35 cm (14 in) and 150 cm (59 in) tall. Growing, flowering, and fruiting between February and November within its native range, the plant produces dense inflorescences of ten to 40 pale-pink flowers at the end of each stem.
Antirrhinum controversum is a perennial herbaceous plant species in the genus Antirrhinum (common snapdragons) of the family Plantaginaceae. The overall forms of A. controversum plants are that of subshrubs.[1] Plants in the species produce thick aerial stems that reach between 35 cm (14 in) and 150 cm (59 in) tall. Leaves grow in a mostly alternating pattern on the stems. These leaves are lanceolate in shape, with the typical Antirrhinum coloring of green on their topsides and purple on their bottoms, and measure between 6 mm (0.24 in) and 40 mm (1.6 in) long and between 0.5 mm (0.020 in) and 6 mm (0.24 in) wide.
The inflorescences on Antirrhinum grow at the terminuses of the stems. On A. controversum, ten to 40 flowers densely populate each inflorescence. The flowers are attached to the stem on pedicels measuring between 1 mm (0.039 in) and 3 mm (0.12 in) long and are arranged in an alternating pattern. The flowers are postured in an erect position. The entire structure of each flower (corolla) measures 16 mm (0.63 in) to 24 mm (0.94 in) in diameter. The flowers are colored pale pink, with a white base on the tubular portion attached to the pedicel. Purple veins are also present. The growth period that includes flowering and fruiting occurs between February and November within the species's native range.[
Fruiting produces oblong-ovoid capsules that measure 6 mm (0.24 in) to 9 mm (0.35 in) long and 4 m (160 in) to 5 mm (0.20 in) wide. These capsules have woody walls with glandular hairs that can measure up to 0.6 mm (0.024 in) long. The seeds are black and oblong-ovoid in shape, measuring between 0.6 mm (0.024 in) and 0.8 mm (0.031 in) long.
Within Antirrhinum, hybridization between species is frequent. Standard A. controversum plants are morphologically similar to typical A. australe plants, with naturally occurring hybridizations between the two species compounding the difficulty of distinguishing between them.
Sunday, 20 January 2019
16-1-2019 BIOPARC, VALENCIA - WHITE HEADED VULTURE (Trigonoceps occipitalis)
The White-headed Vulture, Trigonoceps occipitalis, presents a striking figure in the African skies. This medium-sized vulture, measuring 72–85 centimeters in length with a wingspan of 207–230 centimeters, is notable for its distinctive plumage. The females, slightly larger than the males, weigh an average of 4.7 kilograms, while the males tip the scales at less than 4 kilograms. The species exhibits reversed sexual dimorphism, a unique trait among its African counterparts.
This vulture is easily recognized by its contrasting black and white plumage. A white crest adorns its head, and the featherless regions of its face are a pale hue. Its beak is tinged pink, and the dark brown upper parts complement the black tail feathers. From below, the white feathers on its lower parts and legs are unmistakable. Each individual can be identified by a unique pattern in their median wing coverts.
The White-headed Vulture is adapted to mixed, dry woodlands at lower altitudes, avoiding human settlements. It thrives in thorny Acacia-dominated landscapes and can be found at elevations up to 4,000 meters in Ethiopia and around 3,000 meters in Kenya.
This vulture's range extends across sub-Saharan Africa, from Senegal and Gambia in the west, east to Somalia, and south to South Africa and Eswatini. It is a resident species, with populations concentrated in protected areas such as the Kruger National Park.
The White-headed Vulture is a solitary bird, often seen alone or in pairs, and is known to be territorial and long-lived. It builds nests predominantly in acacias or baobabs, laying a single egg post-rainy season. This species is also an opportunistic predator, occasionally hunting small mammals and reptiles.
During copulation, the White-headed Vulture emits a deep, squeak-like sound, longer than a grunt, which is considered unusual among vultures.
Breeding pairs are loyal to their territory and exhibit subtle copulation behavior. The average productivity from a study of 73 pairs was 0.69 chicks per pair.
The White-headed Vulture is unique in its appearance and can be distinguished from other vultures by its coloration and size.
Primarily a scavenger, this vulture is often the first to arrive at a carcass due to its habit of flying lower than other species. It may also hunt live prey, such as mongooses, lizards, squirrels, and hares.
The White-headed Vulture is currently classified as Critically Endangered. Its populations have been in decline since the 1940s due to habitat loss, reduced food availability, and poisoning. The species is highly sensitive to land-use changes and is now largely restricted to protected areas.
16-1-2019 BIOPARC, VALENCIA - WHITE BACKED VULTURE (Gyps africanus)
White-backed vultures are obligate scavengers with a high level of specialization on carrion. Their primary food sources are the carcasses of large, grazing animals found the wooded savannahs where it lives. This includes warthogs, zebras, gazelles, ostriches and even livestock. Their beaks are medium-sized not adapted for tearing through tough skin, so they are limited to eating soft tissues, such as the viscera, using a pulling feeding tactic.
White-backed vultures circle through the sky in search of freshly dead animals, often following other scavenger birds and mammalian carnivores to find it. Gyps vultures are considered social vultures which rely heavily on conspecifics to provide information about the position of food and carcasses. Once a carcass is found, they will begin wheeling in the sky, signalling their discovery to other vultures.[citation needed] White-backed vultures feed in groups and are often one of the first vulture species to arrive at a carcass. This leads to this species having a high dominance at carcasses in comparison to other vulture species such as white-headed, hooded, and Egyptian vultures.
After feeding, white-backed vultures often rest with their wings spread and their backs facing the sun, as they have gorged themselves so much they can no longer fly.
White-backed vultures nest in trees. They typically choose tall trees along riparian habitats and show strong a preference for Acacia species. The nests are large, around 1m in diameter, and are made of large sticks and lined with leaves and grasses.
16-1-2019 BIOPARC, VALENCIA - AFRICAN FISH EAGLE (Haliaeetus vocifer)
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True to the first part of its name, the African Fish-eagle is distributed far and wide throughout Africa, the world’s second largest continent. This eagle is relatively common and widespread in a variety of habitats south of the Sahara Desert.
And true to the second part of its name, the African Fish-eagle is very fond of eating fish. As you would expect, the African Fish-eagle is generally found living next to bodies of water of almost any type and size. This beautiful bird of prey can be seen perched on trees or other prominent sites near ponds, estuaries, lakes, rivers, streams, coastal waters, and wetlands.
The stunning African Fish-eagle, with its milk-white head and tail, dark eyes, yellow cere, and chocolate brown back, has become synonymous with Africa’s inland waters, lakes, rivers and dams. In fact, its loud, piercing calls are a characteristic sound around African waterways. If you hear the call of the African Fish Eagle, you are likely to be in a relatively healthy environment.
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Like many birds of prey, the African Fish-eagle is an indicator species. How is this so? These eagles need lots of fish to eat and tall trees to perch and nest in. If a waterway is contaminated, the fish and other water animals will die and the eagles will have nothing to eat, so they won’t survive long. If the area has been deforested, the birds will have nowhere to nest or perch and will leave in search of a better place to live. If these eagles are around, they are finding everything they need to survive in that area. If these eagles are missing or disappearing from an environment where they should be found, biologists know that something is wrong and can begin to research the problem.
The African Fish-eagle is normally very territorial, which means it vigorously defends its home turf from other fish eagles or any other bird or critter it perceives as a threat. Most often, you can see this bird perched alone, in pairs, or in small family groups. However, flocks of up to 75 or more have been recorded under special circumstances, such as when water sources are low or around fishing boats. Can you guess why this might be so? The answer, of course, has to do with food. When water sources are low, or fishing boats pull up to shore with a catch, the African Fish-eagles are presented with an opportunity for a relatively easy meal. Though they still might bicker over a fish or two, they tolerate each other at these “all-you-can-eat buffets.”
16-1-2019 BIOPARC, VALENCIA - CAPE PORCUPINE (Hystrix africaeaustralis)
The Cape porcupine (Hystrix africaeaustralis) grows up to a meter long and 20kg in weight. This is the world’s largest porcupine – and also by far the largest rodent in Africa. However, these dimensions are not as impressive as the sight of the animal itself. It's a vision to behold as it trundles along, beneath a quivering battery of spines – like a bush on legs. And a bush to avoid!
Indigenous to South Africa, the Cape porcupine can be seen near vegetation at sea level to 2000m above sea level, usually in rocky hill areas. Furthermore, if you see one, enjoy the view from afar. You won't want to get too friendly with these prickly creatures! Below are five interesting facts about the Cape porcupine.
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All porcupines (and the Cape porcupine is no exception) have banded quills which are essentially their hairs. Those on the back may be 40cm long; the shorter, open-ended tail quills will rattle as a warning.
Contrary to popular myth, a porcupine’s quills will not fire at enemies but rather will loosely embed in their skin and they easily shed on contact. When threatened, a porcupine erects its quills and backs towards its assailant. Consequently, careless predators may end up with quills so deeply embedded that fatal wounds can develop.
Porcupines feed on roots, bulbs and bark. As a result, their habit of fatally ring-barking trees has a significant ecological impact because it helps open up woodland into savanna.
Porcupines often gnaw bones because they need their minerals and also to sharpen their powerful incisors.
Porcupines form monogamous pairs, which mate throughout the year. The male plays an unusually active role in raising the litter of 2–4 young. Each pair may inhabit up to six burrows and jointly defend its shared territory.
16-1-2019 BIOPARC, VALENCIA - RED CRESTED POCHARD (MALE) (Netta rufina)
The Red-crested Pochard, Netta rufina, is a striking large diving duck. Its name is drawn from the Greek word for duck, 'Netta', and the Latin 'rufina', meaning 'golden-red', a nod to the male's vibrant plumage.
Males are resplendent with a rounded orange head, a red bill, and a contrasting black breast. Their sides are a crisp white, with a brown back and a black tail. Females, on the other hand, are clad in more subdued tones, primarily pale brown with a darker back and crown, and a whitish face. During eclipse, males resemble females but retain their red bills.
These ducks favor lowland marshes and lakes, thriving in the wetland habitats of southern Europe.
The Red-crested Pochard breeds from the steppe and semi-desert regions near the Black Sea to Central Asia and Mongolia. It is a somewhat migratory species, with northern populations wintering in the Indian Subcontinent and Africa.
Gregarious by nature, Red-crested Pochards form large flocks in the winter, often mingling with other diving ducks such as the Common Pochard. They are known to both dive and dabble for their food.
The male emits a distinctive wheezing 'veht', while the female can be heard making a series of hoarse 'vrah-vrah-vrah' calls.
Nests are constructed lakeside amidst vegetation, where they lay clutches of 8–12 pale green eggs.
While unique in appearance, the male Red-crested Pochard can be confused with other pochards during eclipse plumage, but the red bill is a distinguishing feature.
Their diet consists mainly of aquatic plants. These ducks are adept at upending in the water, a method they use more frequently than most diving ducks to forage for food.
The Red-crested Pochard is classified as Least Concern by the IUCN, and it is also a species protected under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA).
Red-crested pochards build nests by the lakeside among vegetation and lay 8–12 pale green eggs. The birds' status in the British Isles is much confused because there have been many escapes and deliberate releases over the years, as well as natural visitors from the continent. However, the majority of individuals in the British Isles are the result of accidental and deliberate introductions. They are most numerous around areas of England including Gloucestershire, Oxfordshire, Northamptonshire and also spotted in Leicestershire.
The red-crested pochard (Netta rufina) is a large diving duck. The scientific name is derived from Greek Netta "duck", and Latin rufina, "golden-red" (from rufus, "ruddy").[2] Its breeding habitat is lowland marshes and lakes in southern Europe and it extends from the steppe and semi-desert areas on the Black Sea to Central Asia and Mongolia, wintering in the Indian Subcontinent and Africa. It is somewhat migratory, and northern birds winter further south into north Africa.
The adult male is unmistakable. It has a rounded orange head, red bill and black breast. The flanks are white, the back brown, and the tail black. The female is mainly a pale brown, with a darker back and crown and a whitish face. Eclipse males are like females but with red bills. They are gregarious birds, forming large flocks in winter, often mixed with other diving ducks, such as common pochards. They feed mainly by diving or dabbling. They eat aquatic plants, and typically upend for food more than most diving ducks.
16-1-2019 BIOPARC, VALENCIA - KNOB BILLED DUCK (Sarkidiornis melanotos)
The knob-billed duck (Sarkidiornis melanotos ), or African comb duck, is a duck found in tropical wetlands in Sub-Saharan Africa, Madagascar and the Indian Subcontinent from northern India to Laos and extreme southern China.
Most taxonomic authorities split this species and the comb duck from each other. The supposed extinct "Mauritian comb duck" is based on misidentified remains of the Mauritius sheldgoose (Alopochen mauritiana ); this was realized as early as 1897, but the mistaken identity can still occasionally be found in recent sources.
This common species is unmistakable. It is one of the largest species of duck. Length can range from 56 to 76 cm (22 to 30 in), wingspan ranges from 116 to 145 cm (46 to 57 in) and weight from 1.03 to 2.9 kg (2.3 to 6.4 lb). Adults have a white head freckled with dark spots, and a pure white neck and underparts. The upperparts are glossy blue-black upperparts, with bluish and greenish iridescence especially prominent on the secondaries (lower arm feathers). The male is much larger than the female, and has a large black knob on the bill. Young birds are dull buff below and on the face and neck, with dull brown upperparts, top of the head and eyestripe. Knob-billed ducks are generally larger in size when compared to comb ducks, and flanks are usually lighter (light grey, in females sometimes whitish).
Immature knob-billed ducks look like a large greyish female of the cotton pygmy goose (Nettapus coromandelicus ) and may be difficult to tell apart if no other birds are around to compare size and hue. However, knob-billed ducks in immature plumage are rarely seen without adults nearby and thus they are usually easily identified too.
The knob-billed duck is silent except for a low croak when flushed.
16-1-2019 BIOPARC, VALENCIA - WESTERN CATTLE EGRET (Bubulcus ibis ssp. ibis)
The Cattle egret (Bubulcus ibis) is a cosmopolitan species of heron named for its association with cattle. It is the only member of the monotypic genus Bubulcus, although some authorities regard its two subspecies as full species, the Western cattle egret and the Eastern cattle egret. Despite the similarities in plumage to the egrets of the genus Egretta, it is more closely related to the herons of Ardea.
The Cattle egret is a stocky bird. It has a relatively short, thick neck, a sturdy bill, and a hunched posture. The nonbreeding adult has mainly white plumage, a yellow bill, and greyish-yellow legs. During the breeding season, adults of the nominate western subspecies develop orange-buff plumes on the back, breast, and crown, and the bill, legs, and irises become bright red for a brief period prior to pairing. The sexes are similar, but the male is marginally larger and has slightly longer breeding plumes than the female; juvenile birds lack coloured plumes and have a black bill.
20-1-2019 ADOR CAMPO, VALENCIA - LITTLE OWL (Athene noctua)
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This owl usually perches in an elevated position ready to swoop down on any small creature it notices. It feeds on prey such as insects and earthworms, as well as small vertebrates including amphibians, reptiles, birds and mammals. It may pursue prey on the ground and it caches surplus food in holes or other hiding places. A study of the pellets of indigestible material that the birds regurgitate found mammals formed 20 to 50% of the diet and insects 24 to 49%. Mammals taken included mice, rats, voles, shrews, moles and rabbits. The birds were mostly taken during the breeding season and were often fledglings, and including the chicks of game birds. The insects included Diptera, Dermaptera, Coleoptera, Lepidoptera and Hymenoptera. Some vegetable matter (up to 5%) was included in the diet and may have been ingested incidentally.
The little owl is partly diurnal and often perches boldly and prominently during the day. If living in an area with a large amount of human activity, little owls may grow used to humans and will remain on their perch, often in full view, while people are around. The little owl has a life expectancy of about 16 years. However, many birds do not reach maturity; severe winters can take their toll and some birds are killed by road vehicles at night, so the average lifespan may be on the order of 3 years.
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The little owl is territorial, the male normally remaining in one territory for life. However, the boundaries may expand and contract, being largest in the courtship season in spring. The home range, in which the bird actually hunts for food, varies with the type of habitat and time of year. Little owls with home-ranges that incorporate a high diversity of habitats are much smaller (< 2 ha) than those which breed in monotonous farmland (with home-ranges over 12 ha). Larger home-ranges result in increased flight activity, longer foraging trips and fewer nest visits. If a male intrudes into the territory of another, the occupier approaches and emits its territorial calls. If the intruder persists, the occupier flies at him aggressively. If this is unsuccessful, the occupier repeats the attack, this time trying to make contact with his claws. In retreat, an owl often drops to the ground and makes a low-level escape. The territory is more actively defended against a strange male as compared to a known male from a neighbouring territory; it has been shown that the little owl can recognise familiar birds by voice.
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The little owl is partly diurnal and often perches boldly and prominently during the day. If living in an area with a large amount of human activity, little owls may grow used to humans and will remain on their perch, often in full view, while people are around. The little owl has a life expectancy of about 16 years. However, many birds do not reach maturity; severe winters can take their toll and some birds are killed by road vehicles at night, so the average lifespan may be on the order of 3 years.
This owl becomes more vocal at night as the breeding season approaches in late spring. The nesting location varies with habitat, nests being found in holes in trees, in cliffs, quarries, walls, old buildings, river banks and rabbit burrows. A clutch of 3 to 5 eggs is laid (occasionally 2 to 8). The eggs are broadly elliptical, white and without gloss; they measure about 35.5 by 29.5 mm (1.40 by 1.16 in). They are incubated by the female who sometimes starts sitting after the first egg is laid. While she is incubating the eggs, the male brings food for her. The eggs hatch after 28 or 29 days. At first the chicks are brooded by the female and the male brings in food which she distributes to them. Later, both parents are involved in hunting and feeding them. The young leave the nest at about 7 weeks, and can fly a week or two later. Usually there is a single brood but when food is abundant, there may be two. The energy reserves that little owl chicks are able to build up when in the nest influences their post-fledgling survival, with birds in good physical condition having a much higher chance of survival than those in poor condition. When the young disperse, they seldom travel more than about 20 km (12 mi). Pairs of birds often remain together all year round and the bond may last until one partner dies.
20-1-2019 ADOR CAMPO, VALENCIA - COMMON CHAFFINCH (MALE) (Fringilla coelebs)
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The Common chaffinch (Fringilla coelebs) is a common and widespread small passerine bird in the finch family. The English name of this species comes from the Old English ‘ceaffinc’, where ceaf is ‘chaff’ and finc ‘finch’. Chaffinches were likely given this name because after farmers thresh their crops, these birds sometimes spend weeks picking through heaps of discarded chaff for grain.
Common chaffinches have a herbivorous and carnivorous (insectivorous) diet. Outside the breeding season, they mainly eat seeds and other plant material that they find on the ground. During the breeding season, their diet switches to invertebrates, especially defoliating caterpillars. The young are entirely fed with invertebrates which include caterpillars, aphids, earwigs, spiders, and grubs (the larvae of beetles).
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The adult male Common chaffinch has a black forehead and a blue-grey crown, nape and upper mantle. The rump is a light olive-green; the lower mantle and scapulars form a brown saddle. The side of the head, throat and breast are a dull rust-red merging to pale creamy pink on the belly. The central pair of tail feathers are dark grey with a black shaft streak. The rest of the tail is black apart from the two outer feathers on each side which have white wedges. Each wing has a contrasting white panel on the coverts and a buff-white bar on the secondaries and inner primaries. The flight feathers are black with white on the basal portions of the vanes. The secondaries and inner primaries have pale yellow fringes on the outer web whereas the outer primaries have a white outer edge. After the autumn moult, the tips of the new feathers have a buff fringe that adds a brown cast to the coloured plumage. The ends of the feathers wear away over the winter so that by the spring breeding season the underlying brighter colours are displayed. The eyes have dark brown irises and the legs are grey-brown. In winter the bill is a pale grey and slightly darker along the upper ridge or culmen, but in spring the bill becomes bluish-grey with a small black tip. The adult female is much duller in appearance than the male. The head and most of the upperparts are shades of grey-brown. The underparts are paler. The lower back and rump are a dull olive green. The wings and tail are similar to those of the male. The juvenile resembles the female.
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