Sunday, 25 October 2020
23-10-2020 MONTE CORONA, VALENCIA - SPIDER WASP (Family Pompilidae)
Wasps in the family Pompilidae are commonly called spider wasps, spider-hunting wasps, or pompilid wasps. The family is cosmopolitan, with some 5,000 species in six subfamilies. Nearly all species are solitary (with the exception of some group-nesting Ageniellini, and most capture and paralyze prey, though members of the subfamily Ceropalinae are kleptoparasites of other pompilids, or ectoparasitoids of living spiders.
In South America, species may be referred to colloquially as marabunta or marimbondo, though these names can be generally applied to any very large stinging wasps. Furthermore, in some parts of Venezuela and Colombia, it is called matacaballos, or "horse killers", while in Brazil some particular bigger and brighter species of the general marimbondo kind might be called fecha-goela/cerra-goela, or "throat locker".
Like other strong fliers, pompilids have a thorax modified for efficient flight. The metathorax is solidly fused to the pronotum and mesothorax; moreover, the prothorax is best developed in Pompilidae and Scoliidae because wasps in these families use their forelegs to dig.
Pompilids typically have long, spiny legs; the hind femur is often long enough to reach past the tip of the abdomen. The tibiae of the rear legs usually have a conspicuous spine at their distal end. The first two segments of the abdomen are narrow, giving the body a slender look. The pompilid body is typically dark (black or blue, sometimes with metallic reflections), but many brightly colored species exist. From a lateral view, its pronotum looks rectangular and it extends back to the tegulae, near the base of the wings. Most species are macropterous (having long wings), but a few brachypterous (short-winged) and apterous (no wings) species are known.
Spider wasps are best distinguished from other vespoid wasps in having (in most species) a transverse groove bisecting the mesopleuron (the mesepisternal sclerite, a region on the side of middle segment of the thorax above the point where the legs join). They have antennae with 10 flagellomeres in females and 11 in males. Most Pompilidae have straight inner eye margins. The hind wings do not have a distinct claval lobe, but they have a distinctive jugal lobe. The hind leg has a tibial spur with a tuft or row of fine hairs. The legs are long and slender with the tips of the tibia (metatibia) long enough to extend beyond the tip of the abdomen (metasoma). Sexual dimorphism is not pronounced, although females are often larger than the males. Coloration and wing appearance vary greatly among the many species. General coloration is aposematic (warning off predators), generally based on black, often with markings of orange, red, yellow, or white. Larvae can also be identified by physical examination.
25-10-2020 TANCAT D'ILLA, VALENCIA - BLACK REDSTART (FEMALE) (Phoenicurus ochruros)
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The Black Redstart (Phoenicurus ochruros) is a small, charismatic passerine bird, exhibiting a blend of dark and vibrant plumage. Males are distinguished by their dark grey to black upperparts and breast, with a striking orange-red rump and tail. Females and juveniles are more subdued in color, with grey to grey-brown feathers and the same vivid tail coloration that is the hallmark of the species.
Adult males are easily identified by their dark upperparts and black breast, contrasting with the orange-red lower rump and tail. The belly and undertail may vary from blackish-grey to orange-red, depending on the subspecies. Females and juveniles are less conspicuous, with overall greyer tones and a distinctive orange-red rump and tail. The presence of pale fringes on the secondaries forms a whitish wing panel in some subspecies.
The Black Redstart has adapted remarkably to urban environments, often found nesting in crevices or holes within buildings. Originally a dweller of stony mountainous regions, it now thrives in industrial areas with similar structural features.
This species is widely distributed across south and central Europe, Asia, and north-west Africa. It is a resident in milder regions, while populations in the northeast migrate to warmer areas during winter.
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The Black Redstart is known for its robin-like movements, including quick ducks of the head and body, and frequent tail flicking. Males possess a rattling song and a tick call, adding to their distinctive presence.
The Black Redstart's vocal repertoire includes a variety of calls, which differ among subspecies. The male's song is a rattling melody, while its call is a sharp 'tick', often heard during its active foraging.
Typically monogamous, the Black Redstart begins breeding in mid-April. Nests are built by females in sheltered nooks, lined with soft materials. Clutches consist of 4 to 6 eggs, incubated primarily by the female. Both parents tend to the fledglings, which leave the nest after 12 to 19 days.
The Common Redstart shares some similarities but can be distinguished by its different behavior, ecological requirements, and less dark plumage.
The Black Redstart's diet includes insects, which it often catches mid-flight. It is also known to forage in coastal areas for tiny crustaceans and flies.
The IUCN Red List classifies the Black Redstart as Least Concern, indicating a stable population across its extensive range.
25-10-2020 TANCAT D'ILLA, VALENCIA - EUROPEAN STONECHAT (Saxicola rubicola)
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The European stonechat, Saxicola rubicola, is a small, charming passerine bird, once thought to be a member of the thrush family but now placed within the Old World flycatcher family, Muscicapidae. This species exhibits a striking sexual dimorphism, with males donning a black plumage with vibrant orange throats and females wearing a more subdued brown.
Males in their summer plumage are unmistakable with their black heads, orange throats, and white bellies. They also sport a distinctive white half-collar and small white patches on the wings and rump. Females, on the other hand, are predominantly brown with less pronounced white wing patches. Both sexes have notably short wings, which are shorter than those of their migratory relatives.
The European stonechat favors heathlands, coastal dunes, and open grasslands dotted with shrubs, brambles, and heather. These habitats provide the perfect backdrop for their active foraging and breeding behaviors.
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This species is widely distributed across Europe, reaching as far east as Ukraine and the South Caucasus, and can also be found in parts of North Africa.
Stonechats are known for their lively presence, often perching conspicuously as they keep a vigilant eye on their surroundings. They exhibit a partial migratory pattern, with some populations moving southward to escape the colder winters.
The male stonechat's song is a delightful, high-pitched twitter, reminiscent of a dunnock's melody. Both sexes communicate with a distinctive call that evokes the sound of two stones being tapped together.
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European stonechats are monogamous during the breeding season and commence their reproductive efforts at one year of age. They raise two to three broods per season, with the female constructing the nest and both parents tending to the young.
The European stonechat can be confused with the Siberian stonechat and the African stonechat, but genetic evidence supports their distinction as separate species.
These birds are adept insectivores, gleaning a variety of invertebrates from their environment to sustain themselves and their offspring.
The European stonechat does not currently face any significant conservation threats and enjoys a stable population across its range.
25-10-2020 CREU DE LONGA, VALENCIA - WESTERN SWAMPHEN (Porphyrio porphyrio)
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The Western Swamphen, Porphyrio porphyrio, is a striking waterbird of the rail family Rallidae. Known also as the sultana bird, this species is adorned with vibrant plumage, large feet, and a distinctive red bill and frontal shield, making it a conspicuous presence in its natural habitat.
This chicken-sized bird can be identified by its bright plumage, which is typically purple-blue, and its red bill and frontal shield. The large feet of the Western Swamphen are another characteristic feature, aiding in its navigation through wetland vegetation.
The Western Swamphen is found in a variety of wetlands, including swamps, lake edges, and damp pastures. These environments provide the bird with the necessary resources for feeding and breeding.
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The species is native to parts of the Western Palearctic, with populations in Spain, Portugal, southeastern France, Italy (notably Sardinia and Sicily), and northwestern Africa, including Morocco, Algeria, and Tunisia.
Despite its somewhat clumsy flight, the Western Swamphen is capable of flying long distances. It is also an adept swimmer, particularly for a bird without webbed feet. The species is known for its loud, quick calls, which include bleating and hooting sounds that are quite unbird-like in tone. These calls are especially prevalent during the breeding season.
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The Western Swamphen's vocalizations are distinctive and varied, including loud and quick bleating and hooting calls. These sounds are an integral part of the bird's social and breeding behaviors.
Breeding typically occurs seasonally, with timing correlating with peak rainfall or summer in temperate regions. The Western Swamphen nests in warm reed beds, constructing large pads of interwoven reeds on floating debris or just above water level. Both sexes incubate the 3–6 speckled eggs for 23–27 days. Chicks are precocious, feathered with downy black plumage, and are able to leave the nest shortly after hatching, though they may remain for a few days before venturing out.
The diet of the Western Swamphen includes tender shoots and vegetable-like matter found within its wetland habitat. It also consumes eggs, ducklings, small fish, and invertebrates such as snails. There are reports of these birds attacking large eels, though it is not confirmed if eels are a regular part of their diet. They are known to use one foot to bring food to their mouth rather than eating it on the ground.
25-10-2020 CREU DE LONGA, VALENCIA - LITTLE GREBE (Tachybaptus ruficollis)
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At 23 to 29 centimetres (9 to 11+1⁄2 inches) in length it is the smallest European member of its family. It is commonly found in open bodies of water across most of its range.
The little grebe was described by the German naturalist Peter Simon Pallas in 1764 and given the binomial name Colymbus ruficollis. The tricolored grebe was formerly considered conspecific, with some taxonomic authorities still considering it so.
Saturday, 24 October 2020
19-10-2020 SIERRA DE ESPUNA, MURCIA - CRESTED TIT (Lophophanes cristatus)
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The crested tit or European crested tit (Lophophanes cristatus) (formerly Parus cristatus), is a passerine bird in the tit family Paridae. It is a widespread and common resident breeder in coniferous forests throughout central and northern Europe and in deciduous woodland in France and the Iberian peninsula. In Great Britain, it is chiefly restricted to the ancient pinewoods of Inverness and Strathspey in Scotland, and seldom strays far from its haunts. A few vagrant crested tits have been seen in England. It is resident, and most individuals do not migrate.
This species was formerly placed in Parus, but the distinctness of Lophophanes is well supported, and it is now recognised by the American Ornithologists' Union and the British Ornithologists' Union as a distinct genus.
The current genus name, Lophophanes, is from the Ancient Greek lophos, "crest", and phaino, "to show". The specific cristatus is Latin for "crested".
22-10-2020 SIERRA DE ESPUNA, MURCIA - COMMON REDSTART (Phoenicurus phoenicurus)
The common redstart (Phoenicurus phoenicurus), or often simply redstart, is a small passerine bird in the genus Phoenicurus. Like its relatives, it was formerly classed as a member of the thrush family, (Turdidae), but is now known to be an Old World flycatcher (family Muscicapidae).
The Common Redstart shows some affinity to the European Robin in many of its habits and actions. It has the same general carriage, and chat-like behaviour, and is the same length at 13–14.5 cm long but slightly slimmer and not quite as heavy, weighing 11–23 g. The orange-red tail, from which it and other redstarts get their names ("start" is an old word for "tail"), is frequently quivered. Among common European birds, only the Black Redstart (Phoenicurus ochrurus) has a similarly coloured tail.
The male in summer has a slate-grey head and upperparts, except the rump and tail, which, like the flanks, underwing coverts and axillaries are orange-chestnut. The forehead is white; the sides of the face and throat are black. The two central tail feathers are dark brown, the other tail feathers bright orange-red. The wings are grey-brown in male P. p. phoenicurus but the remiges have white outer webs forming a pale to whitish wing-patch in adult male P. p. samamisicus (see Taxonomy and systematics). The orange on the flanks shades to almost white on the belly. The bill and legs are black. In autumn, pale feather fringes on the body feathering obscure the colours of the male, giving it a washed-out appearance. The female is grey-brown above and buff-white or light orange below. In most females the throat is whitish, but some (older?) females show a dark bib, some even approaching males in appearance. In P. p. samamisicus, many females tend to show a light wing-patch, analogous to the males but much less prominent.
Friday, 23 October 2020
22-10-2020 SIERRA DE ESPUNA, MURCIA - BLACK REDSTART (FEMALE) (Phoenicurus ochruros)
20-10-2020 SIERRA DE ESPUNA, MURCIA - AOUDAD (Ammotragus lervia)
The Barbary sheep (Ammotragus lervia), also known as aoudad (pronounced [ˈɑʊdæd]), is a species of caprine native to rocky mountains in North Africa and parts of West Africa. While this is the only species in genus Ammotragus, six subspecies have been described. Although it is rare in its native North Africa, it has been introduced to North America, southern Europe, and elsewhere. It is also known in Berber languages as waddan or arwi, and in former French territories as the mouflon.
Barbary sheep stand 75 to 110 cm (2 ft 6 in to 3 ft 7 in) tall at the shoulder, with a length around 1.5 m (5 ft), and weigh 30 to 145 kg (66 to 320 lb). They are sandy-brown, darkening with age, with a slightly lighter underbelly and a darker line along the back. Upper parts and the outer parts of the legs are a uniform reddish- or grayish-brown. Some shaggy hair is on the throat (extending down to the chest in males) with a sparse mane. Their horns have a triangular cross-section. The horns curve outward, backward, then inward, and can exceed 76 cm (30 in) in length. The horns are fairly smooth, with slight wrinkles evident at the base as the animal matures.
Barbary sheep are endemic to regions of Northern Africa primarily surrounding the barren center of the Sahara Desert. Countries and territories where aoudad may be found include Algeria, Chad (north), Egypt, Libya, Mali (north), Mauritania, Morocco, Niger, Tunisia and Western Sahara. West of the Nile, they can be found in Sudan; east of the Nile, in the Red Sea Hills. The now-extinct Ancient Egyptian corkscrew-horned sheep (Ovis longipes palaeoaegyptiacus) was also thought to be a subspecies of wild barbary sheep.
Populations within its native range have been decreasing due to hunting, legal and otherwise, and destruction of habitat.
Barbary sheep have been introduced to southeastern Spain and the Southwestern United States.
They have become common in a limited region of southeastern Spain, since its introduction in 1970 to Sierra Espuña Regional Park as a game species. Its adaptability enabled it to colonize nearby areas quickly, and private game estates provided other centers of dispersion. The species is currently expanding, according to recent field surveys, now being found in the provinces of Alicante, Almería, Granada, and Murcia. The species is a potential competitor to native ungulates inhabiting the Iberian Peninsula, and has also been introduced to La Palma (in the Canary Islands), and has spread throughout the northern and central parts of the island, where it is a serious threat to endemic vegetation. The aoudad has also been introduced in Croatia several times, where a population exists in Mosor.
During the winter of 1957-1958, 42 Barbary sheep were released in the Palo Duro Canyon of Texas for the purpose of attracting hunters to the region.
Although the species has not yet been recorded in Australia, it is considered a pest species in Queensland, with the potential to establish in the wild.
A. lervia is the only species in the genus Ammotragus, but some authors include this genus in the goat genus Capra, together with the sheep genus Ovis.
Barbary sheep are found in arid mountainous areas where they graze and browse grasses, bushes, and lichens. They are able to obtain all their metabolic water from food, but if liquid water is available, they drink and wallow in it. Barbary sheep are crepuscular - active in the early morning and late afternoon and rest in the heat of the day. They are very agile and can achieve a standing jump over 2 m (7 ft). They are well adapted to their habitat, which consist of steep, rocky mountains and canyons. They often flee at the first sign of danger, typically running uphill. They are extremely nomadic and travel constantly via mountain ranges. Their main predators in North Africa were the Barbary leopard, Barbary lion, and caracal, but now humans, feral dogs, competition due to overgrazing by domestic animals, and drought[20] threaten their populations.
22-10-2020 SIERRA DE ESPUNA, MURCIA - BUFF TAILED BUMBLE BEE (Bombus terrestris)
Bombus terrestris, the buff-tailed bumblebee or large earth bumblebee, is one of the most numerous bumblebee species in Europe. It is one of the main species used in greenhouse pollination, and so can be found in many countries and areas where it is not native, such as Tasmania. Moreover, it is a eusocial insect with an overlap of generations, a division of labour, and cooperative brood care. The queen is monogamous which means she mates with only one male. B. terrestris workers learn flower colours and forage efficiently.
B. terrestris is most commonly found throughout Europe and generally occupies temperate climates. Because it can survive in a wide variety of habitats, there are populations in the Near East, the Mediterranean Islands, and Northern Africa as well. Additionally, it has escaped captivity after being introduced as a greenhouse pollinator in countries where it is not native, so this bee is now considered an invasive species in many of these places, including Japan, Chile, Argentina, and Tasmania. Nests are usually found underground, such as in abandoned rodent dens. Colonies form comb-like nest structures with egg cells each containing several eggs. The queen will lay egg cells on top of one another. Colonies produce between 300 and 400 bees on average, with a large variation in the number of workers.
Like in most social bees, there are three main social caste divisions in B. terrestris. This ensures a division of labor and efficient colony functioning. Queens become the main female individual to reproduce in a future colony. There is only one per colony. Her sole responsibility is to lay eggs after she founds a nest. This fate is determined for larvae that receive more food, have longer instar stages, and higher levels of juvenile hormone biosynthesis. Workers, an entirely female caste, mainly forage for food, defend the colony, and tend to the growing larvae. They are usually sterile for most of the colony cycle and do not raise their own young. Unlike queens and workers, which develop from fertilized diploid eggs, drones, or male bees, are born from unfertilized, haploid eggs. Drones leave the colony shortly after reaching adulthood to find a mate outside the nest. Mating is their sole role in the colony.
20-10-2020 SIERRA DE ESPUNA, MURCIA - RED CROSSBILL (MALE) (Loxia curvirostra)
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The Red Crossbill, known as Loxia curvirostra, is a small passerine bird belonging to the finch family Fringillidae. This species exhibits a unique adaptation: its mandibles, which cross at the tips, are specialized for extracting seeds from conifer cones and other fruits. Adult males typically display vibrant red or orange plumage, while females are adorned in shades of green or yellow. However, there is considerable variation in both beak size and shape, as well as call types, across its range.
The Red Crossbill is readily identified by its distinctive crossed mandibles, a feature that sets it apart from most other bird species. However, it shares this characteristic with the similar Two-barred Crossbill. The Red Crossbill can be distinguished by its uniformly brownish-black wings, lacking the bright white wing bars present in the Two-barred Crossbill. While there are other closely related crossbills within its range, such as the Parrot, Scottish, and Cassia Crossbills, these are best identified by their calls, as visual differences are minimal.
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Red Crossbills inhabit a variety of coniferous forests across North America and Eurasia, where they are closely associated with the availability of conifer seeds.
The Red Crossbill is a widespread species, breeding and residing in coniferous forests across North America and Eurasia. Its presence can be irregular, as it may appear in certain areas only in years when the cone crop is abundant.
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This species is known for its nomadic and irruptive behavior, with movements closely tied to the availability of conifer seeds. Red Crossbills typically breed in late summer when conifer seeds mature but may breed at any time of year if a suitable cone crop is found. They are known to disperse widely in search of food, and their occurrence can be quite unpredictable. Some populations, such as the Newfoundland Crossbill, are resident and do not exhibit significant movements.
The Red Crossbill is primarily identified by its call, a single note "chip" that varies between the different types. These calls are frequently given and are key to distinguishing between the various populations.
Breeding occurs in coniferous forests, with timing closely linked to the maturation of conifer seeds. Red Crossbills may nest at any time of year if they find an area with an adequate cone crop.
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Similar species include the Two-barred Crossbill, Parrot Crossbill, Scottish Crossbill, and Cassia Crossbill. These species were once considered subspecies of the Red Crossbill but are now recognized as distinct, primarily based on call differences.
The diet of the Red Crossbill is specialized, consisting primarily of seeds from conifer cones. They use their unique bill shape to pry apart the scales of cones and access the seeds within.
The Red Crossbill is currently listed as Least Concern on the IUCN Red List, indicating that it is not at immediate risk of widespread decline.
20-10-2020 SIERRA DE ESPUNA, MURCIA - RED CROSSBILL (FEMALE) (Loxia curvirostra)
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The Red Crossbill, known as Loxia curvirostra, is a small passerine bird belonging to the finch family Fringillidae. This species exhibits a unique adaptation: its mandibles, which cross at the tips, are specialized for extracting seeds from conifer cones and other fruits. Adult males typically display vibrant red or orange plumage, while females are adorned in shades of green or yellow. However, there is considerable variation in both beak size and shape, as well as call types, across its range.
The Red Crossbill is readily identified by its distinctive crossed mandibles, a feature that sets it apart from most other bird species. However, it shares this characteristic with the similar Two-barred Crossbill. The Red Crossbill can be distinguished by its uniformly brownish-black wings, lacking the bright white wing bars present in the Two-barred Crossbill. While there are other closely related crossbills within its range, such as the Parrot, Scottish, and Cassia Crossbills, these are best identified by their calls, as visual differences are minimal.
Red Crossbills inhabit a variety of coniferous forests across North America and Eurasia, where they are closely associated with the availability of conifer seeds.
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The Red Crossbill is a widespread species, breeding and residing in coniferous forests across North America and Eurasia. Its presence can be irregular, as it may appear in certain areas only in years when the cone crop is abundant.
This species is known for its nomadic and irruptive behavior, with movements closely tied to the availability of conifer seeds. Red Crossbills typically breed in late summer when conifer seeds mature but may breed at any time of year if a suitable cone crop is found. They are known to disperse widely in search of food, and their occurrence can be quite unpredictable. Some populations, such as the Newfoundland Crossbill, are resident and do not exhibit significant movements.
The Red Crossbill is primarily identified by its call, a single note "chip" that varies between the different types. These calls are frequently given and are key to distinguishing between the various populations.
Breeding occurs in coniferous forests, with timing closely linked to the maturation of conifer seeds. Red Crossbills may nest at any time of year if they find an area with an adequate cone crop.
22-10-2020 SIERRA DE ESPUNA, MURCIA - COMMON DARTER DRAGONFLY (FEMALE) (Sympetrum striolatum)
The common darter (Sympetrum striolatum) is a dragonfly of the family Libellulidae native to Eurasia. It is one of the most common dragonflies in Europe, occurring in a wide variety of water bodies, though with a preference for breeding in still water such as ponds and lakes. In the south of its range adults are on the wing all year round.
Sympetrum species are not easy to tell apart and in most areas more than one Sympetrum species will occur. Females and teneral individuals have light yellow thorax and abdomen. Males turn red as they mature. Females darken with age, becoming a dark chocolate brown, and sometimes develop a blue colouration to the bottom of the abdomen. The wings also develop a brown tinge with age. In all cases the legs have a cream or yellow stripe on a black background - this is a diagnostic feature of this species. The pterostigma of the females can be red, blue, pale blue or brown.
22-10-2020 PUERTO DE MAZARRON, MURCIA - YELLOW LEGGED GULL (Larus michahellis)
The Yellow-legged Gull (Larus michahellis) is a large, robust seabird with a commanding presence. Its size can be quite variable, with the smallest females being scarcely larger than a Common Gull, and the largest males approaching the heft of a Great Black-backed Gull. Adults typically exhibit a grey back, a shade lighter than that of the Lesser Black-backed Gull, and their heads are notably whiter in the autumn months. A distinctive feature is their yellow legs, which give this species its common name.
When observing the Yellow-legged Gull, look for the yellow legs that contrast with the grey back and the white head, which becomes even whiter during the autumn. The wing tips are black with limited white spots, and adults have a red spot on the bill. The eye is surrounded by a red ring. Juveniles can be identified by their paler head, rump, and underparts, dark bill and eyes, and a black band on the tail.
This gull favors a variety of coastal environments, often nesting on sea cliffs, islands, and occasionally on buildings within urban settings. It is also known to breed on trees in some regions.
The Yellow-legged Gull has a breeding range centered around the Mediterranean Sea, extending to the Atlantic islands and coasts as far north as Brittany and west to the Azores. Its presence is also noted on the western side of the Black Sea.
The species is known for its adaptability, with many individuals remaining in the same area year-round, while others migrate to milder regions of western Europe or head south to areas such as Senegal and the Red Sea. Post-breeding dispersal can lead to increased numbers in regions like southern England from July to October.
21-10-2020 PUERTO DE MAZARRON, MURCIA - YELLOW LEGGED GULL (JUVENILE) (Larus michahellis)
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22-10-2020 EL BERRO, MURCIA - SHORT HORNED GRASSHOPPER (Family Acrididae)
Calliptamus is a genus of short-horned grasshoppers (family Acrididae) widespread across Europe, Africa, and Asia. Famous for their vibrant pink hindwings, high adaptability to arid environments, and localized agricultural impact, they are common throughout Spain and the Mediterranean basin.
Physical Characteristics
Size: Strong sexual dimorphism is present; adult males typically measure \(14\) to \(28 \text{ mm}\), while females are noticeably larger, ranging from \(21\) to \(42 \text{ mm}\).
Coloration: Their bodies vary from pale gray to brownish-red. The hind femora are short and thick, and the hind tibiae are typically a striking ruby-red or pink.
The "Rosy Wings": When in flight, they flash brilliant pink or reddish hindwings, earning them the nickname "rosy-winged locust".
22-10-2020 SALADARES DEL GUADALENTIN, MURCIA - LITTLE OWL (Athene noctua)
The Little Owl, Athene noctua, is a diminutive yet distinctive bird, often associated with the goddess Athena in Greek mythology and Minerva in Roman lore. This bird is characterized by a flat-topped head, a robust, compact body, and a relatively short tail. Its plumage is a mottled greyish-brown, adorned with white spots, streaks, and bars, giving it a cryptic appearance. Both sexes are similar in size, measuring approximately 22 cm in length with a wingspan of 56 cm, and weighing around 180 grams.
The Little Owl possesses a large head, elongated legs, and striking yellow eyes. Its white "eyebrows" lend it a somewhat stern expression. Juvenile birds are somewhat duller than adults and lack the white crown spots. The species is known for its woodpecker-like bounding flight. During the moult, which occurs from July to November, males begin shedding feathers before females.
This owl favors open countryside and thrives in a variety of habitats, including agricultural lands with hedgerows and trees, orchards, woodland edges, parks, gardens, steppes, and semi-deserts. It can also be found in treeless areas such as dunes, and near human-made structures like ruins and quarries.
The Little Owl's range spans much of temperate and warmer parts of Europe, the Palearctic east to Korea, and North Africa. It has been introduced to Britain and the South Island of New Zealand, where it has established populations.
The Little Owl is known for its territorial nature, with males defending their territories from intruders. It is partly diurnal and can often be seen perched in prominent positions during the day. Its diet consists of insects, earthworms, other invertebrates, and small vertebrates. The owl is adept at swooping down on prey from its perch and is known to cache surplus food.
The Little Owl's call is a querulous "kiew, kiew," and it also produces various whistling or trilling sounds. During the breeding season, it may emit more modulated calls, and pairs can engage in duets. Near the nest, the owl may make yelping, chattering, or barking noises.
Breeding season sees increased vocal activity at night in late spring. Nests are located in a variety of places, including tree holes, cliffs, and old buildings. The female lays a clutch of about four eggs, which she incubates. The male provides food during this period, and both parents feed the chicks once hatched. Young owls fledge at about seven weeks of age.
The Little Owl's diet is diverse, including mammals like mice and voles, birds, and a wide range of insects. It hunts both on the ground and in flight, and food caching behavior has been observed.
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.
22-10-2020 MONTE CORONA, VALENCIA - STINK BUG (Acrosternum millierei)
Acrosternum millierei (Mulsant & Rey, 1866) is a species of shield bug in the family Pentatomidae, recognized as a significant agricultural pest, particularly for pistachio trees.
Key Facts about Acrosternum millierei:
Agricultural Impact: It is a major pest of pistachios, attacking nuts from early spring to harvest. In Iran, it is known to be a vector for Nematospora coryli, a fungus that causes pistachio nut damage.
Physiological Adaptations: These bugs are freeze-intolerant but highly adapted for overwintering. They survive cold temperatures by accumulating polyols (such as trehalose, myoinositol, sorbitol, and glycerol) and lowering their supercooling point (SCP) from a mean of −11.8 °C in summer to −17.6 °C in winter.
Habitat and Distribution: The species is found in the Mediterranean region, including Spain (Murcia, Balearic Isles, Valencia, Alicante, etc.) and Portugal. It has also been recorded in Iran, where it causes damage to pistachio orchards.
Host Plants: Beyond pistachios, A. millierei has been observed on Leucospermum species.
Description: As a pentatomid, it has a characteristic shield-shaped body and belongs to the tribe Nezarini (green stink bugs and allies).
Classification: It was originally described under the name Nezara millierei.
Defense Mechanism: Like other stink bugs, it can emit a foul-smelling odor when threatened or disturbed.
A. millierei is closely related to other green stink bugs and is a key target for pest management in nut-producing regions.
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