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Sunday, 15 May 2016

15-5-2016 VILLALONGA RESERVOIR - MALLARD (FEMALE) (Anas platyrhynchos)


The mallard (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. Mallards live in wetlands, eat water plants and small animals, and prefer to congregate in flocks of varying sizes. Unlike many waterfowl, mallards are considered an invasive species in some regions. It is a very adaptable species, being able to live and even thrive in urban areas. This species is the main ancestor of most breeds of domestic duck, and its naturally evolved wild gene pool has been genetically polluted by the domestic and feral mallard populations.


The magnificent mallard is one of the most recognizable bird species around the world. When flying, the bird displays a purplish-blue speculum, which is outlined in white. Males of this species are particularly colorful. Breeding males have a yellow beak, dark brown chest, black and white tail as well as bright green head and neck. They exhibit a white ring at the base of their neck. In addition, the sides of breeding males and most of their wings are gray. On the other hand, the plumage of female mallards and non-breeding males is less vivid and colorful. The overall plumage of female mallards is spotted with tan and brown patches, and the head is a lighter tan, showing dark bands near the crown and eyes. Females have orange-colored beaks, covered with dark spots. Females and non-breeding males generally look alike, though the latter have yellowish beaks.


Mallards are found across the Northern and Southern Hemispheres; in North America, their range extends from southern and central Alaska to Mexico, the Hawaiian Islands, across the Palearctic, from Iceland and southern Greenland and parts of Morocco (North Africa) in the west, Scandinavia and Britain to the north, and to Siberia, Japan, and South Korea. Also in the east, it ranges to south-eastern and south-western Australia and New Zealand in the Southern hemisphere. Mallards are strongly migratory in the northern parts of their breeding range and winter farther south. 


They live in a wide range of habitats and climates, from the Arctic tundra to subtropical regions. They can be found in both fresh- and salt-water wetlands, including parks, small ponds, rivers, lakes, and estuaries, as well as shallow inlets and open seas within sight of the coastline. Water depths of less than 0.9 m (3.0 ft) are preferred, with birds avoiding areas more than a few meters deep. They are attracted to bodies of water with aquatic vegetation.


Mallards are diurnal birds that spend most of their time feeding. They usually feed by dabbling for plant food or grazing. They are highly gregarious outside of the breeding season and form large flocks, which are known as "sordes". However, during the breeding season, both male and female mallards can become aggressive, driving off competitors to themselves or their mate by charging at them. Males typically fight more than females and attack each other by repeatedly pecking at their rival's chest, ripping out feathers and even skin on rare occasions. Females may also carry out 'inciting displays', which encourage other ducks in the flock to begin fighting. In general, mallards are noisy birds. Females have the deep ‘quack’ stereotypically associated with ducks. Males make a sound phonetically similar to that of the female, a typical ‘quack’, but it is deeper and quieter compared to that of the female. When incubating a nest, or when offspring are present, females vocalize differently, making a call that sounds like a truncated version of the usual ‘quack’. In addition, females hiss if the nest or offspring are threatened or interfered with. When taking off, the wings of a mallard produce a characteristic faint whistling noise.


Mallards have a monogamous mating system. However, they widely practice so-called “extra-pair copulation”, and paired males are known to chase females that are not their mates. Nesting starts in April, reaching its peak in May. During this period, mated pairs are seen circling in the evenings low over the habitat and looking for a suitable nesting site. When the site is chosen, the female constructs the nest on the ground, near a water body, laying 9-13 eggs, which are incubated for 26-28 days. Chicks of this species are precocial; once born, they are able to swim, being introduced to water within 12 hours after hatching. Right after mating, male mallards usually leave, gathering into male flocks for molting in early June, while the females stay with the offspring, caring for the chicks for 42-60 days. Both males and females reach reproductive maturity at 1 year of age.

15-5-2016 VILLALONGA RESERVOIR - LITTLE RINGED PLOVER (Charadrius dubius)


The little ringed plover (Charadrius dubius ) is a small plover. The genus name Charadrius is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives from Ancient Greek kharadrios a bird found in river valleys (kharadra, "ravine"). The specific dubius is Latin for doubtful, since Sonnerat, writing in 1776, thought this bird might be just a variant of common ringed plover.

Adult little ringed plovers have a grey-brown back and wings, a white belly and a white breast with one black neckband. They have a brown cap, a white forehead, a black mask around the eyes with white above and a short dark bill. The legs are flesh-coloured and the toes are all webbed.


This species differs from the larger ringed plover in leg colour, the head pattern, and the presence of a clear yellow eye-ring.

Their breeding habitat is open gravel areas near freshwater, including gravel pits, islands and river edges across the Palearctic including northwestern Africa. They nest on the ground on stones with little or no plant growth. Both males and females take turns incubating the eggs.

They are migratory and winter in Africa. These birds forage for food on muddy areas, usually by sight. They eat insects and worms.

This attractive small wading bird is a relatively new addition to the British breeding avifauna, first recorded nesting here in 1938.


Little Ringed Plovers are summer visitors to Britain, sometimes arriving as early as mid-March. Originally associated with gravel workings in central England, they have now colonised seasonally wet areas across the post-industrial landscapes of the north-west. In Wales and Scotland, new colonists use river gravels for nesting.

Easily confused with its commoner coastal cousin, the Ringed Plover, this species prefers fresh water. It is a daintier bird, has more subtle colours and lacks a white wing-bar when seen in flight. A good close view reveals the diagnostic yellow eye-ring.

15-5-2016 VILLALONGA RESERVOIR - LITTLE EGRET (Egretta garzetta)


In breeding plumage, little egrets have a white body, with long feathers on the upper breast and recurved scapular feathers. On the head the face is pale-blue grey with red lores. There are two long and fine white feathers on the back of the crown that extend to the nape and mid-neck.

The thin, pointed bill is black on the upper mandible and grey on the lower. The eyes are yellow, and the legs are black with bright orange or red feet.

Out of breeding plumage, little egrets lack the long feathers on their body and their lores are grey. The bill is black, the eyes are pale yellow, the legs are black, and the feet are yellow. Males and females look similar.


Juvenile little egrets resemble the adult in winter but the bill is duller and greenish, the legs are greenish-grey.

Little egrets breed between March and June and produce 1 brood a season. They are monogamous and nest in loose colonies with other species in the family in marshes, rivers, wetlands, and estuaries. It is placed on the ground, or in reedbeds, or sometimes in trees or bushes. The male brings materials for the nest to the female who arranges them into a flimsy platform made from sticks and reed stems.


Little egrets lay 3-4 smooth, pale greenish-blue eggs which are incubated by both parents for 21-25 days. In between turns the perform ritual bowing displays with fluffed plumage accompanied by calls.

The chicks are covered in white down and have a pink bill and legs which soon turn blue-grey. They climb out of the nest at about 3 weeks and can fly at 5 weeks when they follow adults and learn how to feed themselves. They fledge at about 40-45 days after hatching but will roost at the nest colony for some time after.

Little egrets are opportunistic feeders and eat fish, aquatic insects, crustaceans, amphibians, molluscs, worms, reptiles, and small birds. They stalk their prey in shallow water or wait before striking. The prey is swallowed whole and indigestible parts, such as bones, claws, and feathers, are regurgitated as pellets.

15-5-2016 VILLALONGA RESERVOIR - GREY WAGTAIL (Motacilla cinerea)


Population size
6.9-19.8 Mlnlnn
Life Span
8 years
Weight
15-23
goz
g oz 
Length
18-19
cminch
cm inch 
Wingspan
25-27
cminch
Grey wagtails (Motacilla cinerea) are slender ground-feeding insectivorous birds of open country. They are always associated with running water when breeding, although they may use man-made structures near streams for the nest. Outside the breeding season, these birds may also be seen around lakes, coasts, and other watery habitats. Like other wagtails, they frequently wag their tail and fly low with undulations and they have a sharp call that is often given in flight.


The Grey wagtail has a narrow white supercilium and a broken eye ring. The upperparts are grey and the yellow vent contrasting with whitish underparts makes it distinctive. The breeding male has a black throat that is edged by whitish moustachial stripes. They forage singly or in pairs on meadows or on shallow water marshes. They also use rocks in water and will often perch on trees. They have a clear sharp call note and the song consists of trills.

Grey wagtails are widely distributed across the Palearctic region. They are found from western Europe including the British Isles, Scandinavia, and Mediterranean region, and to eastern Europe and northeastern and central parts of Asia. Some populations are migratory and winter in Africa and Asia. Grey wagtails inhabit mountain streams, lakes, and rivers with exposed rocks, canals, farmlands, tea plantations, and even urban areas.

15-5-2016 MONTE CORONA - EUROPEAN RABBIT (Oryctolagus cuniculus)


The European rabbit is smaller than the European hare and Mountain hare and lacks black ear tips, as well as having proportionately shorter legs. The fur of the European rabbit is generally greyish-brown, but this is subject to much variation. The guard hairs are banded brown and black, or grey, while the nape of the neck and scrotum are reddish. The chest patch is brown, while the rest of the underparts are white or grey. A white star shape is often present on kits' foreheads but rarely occurs in adults. The whiskers are long and black, and the feet are fully furred and buff-coloured. The tail has a white underside, which becomes prominent when escaping danger. This may act as a signal for other rabbits to run. Moulting occurs once a year, beginning in March on the face and spreading over the back. The underfur is completely replaced by October-November. The European rabbit exhibits great variation in colour, from light sandy to dark grey and completely black. Such variation depends largely on the amount of guard hairs relative to regular pelage.

15-5-2016 MONTE CORONA - SPOTTED FLYCATCHER (Muscicapa striata)


Spotted flycatchers are one of our summer migrants that spend the winter in Africa. They are one of the latest migrants to reach us, with a few trickling into the country from late April and most arriving from mid-May.
Despite arriving relatively late, spotted flycatchers manage to rear two broods of young before departing at the end of August. The success of the second clutch is increased by fewer eggs being laid, meaning less mouths to fill. They will nest in gardens but the nest is usually well hidden on ledges or behind climbing plants.

Spotted flycatchers prefer large flying insects, including flies and butterflies. However, if the weather is cool and insects aren’t flying, they will take smaller invertebrates from leaves and branches. If poor weather persists, many nests fail as these smaller invertebrates tend to be eaten by the parents rather than fed to the young.

In order to reduce the chances of their invertebrate prey escaping, spotted flycatchers have a series of modified feathers, like bristles, down the sides of the bill. They have also adapted to catch stinging insects. They rub the sting end on their perch to remove it, making the prey safe to eat.

The spotted flycatcher is red listed due to its rapid and consistent population decline with an 89 per cent decrease between 1967 and 2012. Evidence suggests that this is due to poor annual survival rates of first year birds, but conditions in their wintering grounds in Africa may also have contributed to the decline.

15-5-2016 MONTE CORONA - HOUSE SPARROW (MALE) (Passer domesticus)


The house sparrow is strongly associated with human habitation, and can live in urban or rural settings. Though found in widely varied habitats and climates, it typically avoids extensive woodlands, grasslands, polar regions, and hot, dry deserts far away from human development. For sustenance, the house sparrow routinely feeds at home and public bird feeding stations, but naturally feeds on the seeds of grains, flowering plants and weeds. However, it is an opportunistic, omnivorous eater, and commonly catches insects, their larvae, caterpillars, invertebrates and many other natural foods.

15-5-2016 MONTE CORONA, VALENCIA - EUROPEAN SERIN (Serinus serinus)


The European serin, or simply the serin (Serinus serinus ), is the smallest European species of the family of finches (Fringillidae) and is closely related to the Atlantic canary. Its diet consists mainly of a combination of buds and seeds.
The European serin is a small short-tailed bird, 11–12 cm in length. The upper parts are dark-streaked greyish green, with a yellow rump. The yellow breast and white belly are also heavily streaked. The male has a brighter yellow face and breast, yellow wing bars and yellow tail sides. The song of this bird is a buzzing trill, very familiar in Mediterranean countries.


It breeds across southern and central Europe and North Africa. Southern and Atlantic coast populations are largely resident, but the northern breeders migrate further south in Europe for the winter. Open woodland and cultivation, often with some conifers, is favoured for breeding. It builds its nest in a shrub or tree, laying 3–5 eggs. It forms flocks outside the breeding season, sometimes mixed with other finches.

The food is mainly seeds, and, in the breeding season, insects. This small serin is an active and often conspicuous bird.

Tiny with very small, stubby bill. Both sexes are heavily streaked, with yellow rumps. Males have a bright yellow face and breast; this is gray-brown in females. Common in parks, gardens, cities, agricultural areas,and forest edges. Often sings from electricity wires, posts, TV antennas, and the tops of trees. Frantically fast song is often delivered in arcing song flight with "slow motion" wingbeats. Feeds on seeds and sometimes invertebrates.

Saturday, 14 May 2016

14-5-2016 - CULLERA, VALENCIA - MALLARD (MALE) (Anas platyrhynchos)


The mallard (/ˈmælɑːrd, ˈmælərd/) or wild duck (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. It has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa. This duck belongs to the subfamily Anatinae of the waterfowl family Anatidae. Males have green heads, while the females (hens or ducks) have mainly brown-speckled plumage. Both sexes have an area of white-bordered black or iridescent purple or blue feathers called a speculum on their wings; males especially tend to have blue speculum feathers. The mallard is 50–65 cm (20–26 in) long, of which the body makes up around two-thirds the length. 


The wingspan is 81–98 cm (32–39 in) and the bill is 4.4 to 6.1 cm (1.7 to 2.4 in) long. It is often slightly heavier than most other dabbling ducks, weighing 0.7–1.6 kg (1.5–3.5 lb). Mallards live in wetlands, eat water plants and small animals, and are social animals preferring to congregate in groups or flocks of varying sizes.
The female lays 8 to 13 creamy white to greenish-buff spotless eggs, on alternate days. Incubation takes 27 to 28 days and fledging takes 50 to 60 days. The ducklings are precocial and fully capable of swimming as soon as they hatch.

14-5-2016 - CULLERA, VALENCIA - EURASIAN COOT (Fulica atra)


The Eurasian coot (Fulica atra), also known as the Common coot, or Australian coot, is a member of the rail and crake bird family, the Rallidae. It is found in Europe, Asia, Australia, New Zealand, and parts of North Africa. Similar-looking coot species are found throughout the world, with the largest variety of coot species living in South America.

The Eurasian coot is 36–38 cm (14–15 in) in length with a wing-span of 70–80 cm (28–31 in); males weigh around 890 g (31 oz) and females 750 g (26 oz). It is largely black except for the white bill and frontal shield (which gives rise to the phrase "as bald as a coot", in use as early as 1430). As a swimming species, the coot has partial webbing on its long strong toes. The sexes are similar in appearance.

The juvenile is paler than the adult, has a whitish breast, and lacks the facial shield; the adult black plumage develops when about 3–4 months old, but the white shield is only fully developed at about one year old.

Population size
7.9-9.75 Mlnlnn
Life Span
9-15 years
Weight
750-890
goz
g oz 
Length
36-38
cminch
cm inch 
Wingspan
70-80
cminch

12-5-2016 DENIA, ALICANTE - SPECKLED WOOD BUTTERFLY (Pararge aegeria)


The speckled wood (Pararge aegeria) is a butterfly found in and on the borders of woodland areas throughout much of the Palearctic realm. The species is subdivided into multiple subspecies, including Pararge aegeria aegeria, Pararge aegeria tircis, Pararge aegeria oblita, and Pararge aegeria insula. The color of this butterfly varies between subspecies. The existence of these subspecies is due to variation in morphology down a gradient corresponding to a geographic cline. The background of the wings ranges from brown to orange, and the spots are either pale yellow, white, cream, or a tawny orange. The speckled wood feeds on a variety of grass species. The males of this species exhibit two types of mate locating behaviors: territorial defense and patrolling. The proportion of males exhibiting these two strategies changes based on ecological conditions. The monandrous female must choose which type of male can help her reproduce successfully. Her decision is heavily influenced by environmental conditions.

14-9-2015 CUIDAD DE ENCONTADA, CUENCA - ROCK BUNTING (Emberiza cia)


The rock bunting (Emberiza cia) is a passerine bird in the bunting family Emberizidae, a group now separated by most modern authors from the finches, Fringillidae.

The genus name Emberiza is from Old German Embritz, a bunting. The specific cia is from a local Italian name for this bird, from zirlare, "to chirp".

It breeds in northwest Africa, southern Europe east to central Asia, and the Himalayas. It also breeds locally in central Europe. It is partially migratory, with northern populations wintering further south, mainly within the breeding range of the resident southern populations. It is a rare wanderer to western Europe.


The rock bunting breeds in open dry rocky mountainous areas.

This bird is 16 cm in length. The breeding male has chestnut upperparts, unmarked deep buff underparts, and a pale grey head marked with black striping.

The female rock bunting is a washed-out version of the male, with paler underparts, a grey-brown back and a less contrasted head. The juvenile is similar to the female, but with a streaked head.

There are four races differing mainly in the plumage shades, although the subspecies which breeds in Europe, Africa and western Turkey is the only one to show white wing bars.

It lays three to five greyish eggs in a lined nest on the ground or occasionally in a low bush. Its natural food consists of insects when feeding young, and otherwise seeds.

The call is a sharp tseee, and the song is a twittering churrrr-chirrriiii-itt.

Thursday, 12 May 2016

12-5-2016 DENIA, ALICANTE - SARDINIAN WARBLER (MALE) (Sylvia melanocephala)


The Sardinian warbler (Curruca melanocephala ) is a common and widespread typical warbler from the Mediterranean region. Like most Curruca species, it has distinct male and female plumages. The adult male has a grey back, whitish underparts, black head, white throat and red eyes. Plumages are somewhat variable even in the same locality, with the intensity of a reddish hue on upper- and/or underside that varies from absent to (in some subspecies) pronounced. The female is mainly brown above and buff below, with a grey head. The Sardinian warbler's song is fast and rattling, and is very characteristic of the Mediterranean areas where this bird breeds.

It breeds in the southernmost areas of Europe and just into Asia in Turkey and the eastern end of the Mediterranean. This small passerine bird, unlike most "warblers", is not particularly migratory, but some birds winter in north Africa, and it occurs as a vagrant well away from the breeding range, as far as Great Britain.


This is a bird of open country and cultivation, with bushes for nesting. The nest is built in low shrub or brambles, and 3-6 eggs are laid. Like most "warblers", it is insectivorous, but will also take berries and other soft fruit.

Male Sardinian warblers have a strongly contrasting plumage: a black head and upper face, white throat, light grey back and wings, and a paler greyish-white belly. Its tail is dark, edged with white, and it has brownish legs. The eye is reddish-brown, surrounded by a pinkish-orange eye ring.


Outside of the breeding season, their plumage becomes duller, with the upperparts an olive-grey and the black head becoming less rich in colour.

Females are generally duller in appearance than males, with a grey head and a paler reddish eye ring. The throat is white, darkening into a grey-brown belly and flanks, while the upperparts and wings are pale brown. The female’s tail has white outer edges but is otherwise brown.

Juvenile Sardinian warblers resemble adult females, although there is less contrast between the colours, and they are altogether browner, with brownish heads, and buff-brown wing patterning.

12-5-2016 DENIA HARBOUR - EUROPEAN SHAG (JUVENILE) (Phalacrocorax aristotelis)


The European shag or common shag (Gulosus aristotelis ) is a species of cormorant. It is the only member of the monotypic genus Gulosus. It breeds around the rocky coasts of western and southern Europe, southwest Asia and north Africa, mainly wintering in its breeding range except for the northernmost birds. In Britain this seabird is usually referred to as simply the shag. The scientific genus name derives from the Latin for glutton. The species name aristotelis commemorates the Greek philosopher Aristotle.

This is a medium-large black bird, 68 to 78 cm (27 to 31 in) long and with a 95-to-110-centimetre (37 to 43 in) wingspan. It has a longish tail and yellow throat-patch. Adults have a small crest in the breeding season. It is distinguished from the great cormorant by its smaller size, lighter build, thinner bill, and, in breeding adults, by the crest and metallic green-tinged sheen on the feathers. Among those differences are that a shag has a lighter, narrower beak; and the juvenile shag has darker underparts. The European shag's tail has 12 feathers, the great cormorant's 14 feathers. The green sheen on the feathers results in the alternative name green cormorant sometimes being given to the European shag.


It feeds in the sea, and, unlike the great cormorant, is rare inland. It will winter along any coast that is well-supplied with fish.

The European shag is one of the deepest divers among the cormorant family. Using depth gauges, European shags have been shown to dive to at least 45 m (148 ft). European shags are preponderantly benthic zone feeders, i.e. they find their prey on the sea bottom. They will eat a wide range of fish but their commonest prey is the sand eel. Shags will travel many kilometres from their roosting sites in order to feed.

In UK coastal waters, dive times are typically around 20 to 45 seconds, with a recovery time of around 15 seconds between dives; this is consistent with aerobic diving, i.e. the bird depends on the oxygen in its lungs and dissolved in its bloodstream during the dive. When they dive, they jump out of the water first to give extra impetus to the dive.


It breeds on coasts, nesting on rocky ledges or in crevices or small caves. The nests are untidy heaps of rotting seaweed or twigs cemented together by the bird's own guano. The nesting season is long, beginning in late February but some nests are not started until May or even later. Three eggs are laid. Their chicks hatch without down and so they rely totally on their parents for warmth, often for a period of two months before they can fly. Fledging may occur at any time from early June to late August, exceptionally to mid-October.

The shag is a pursuit-diving seabird that feeds predominantly in benthic habitats. Due to the relative ease with which diet samples can be collected from this species (regurgitated food or pellets) and the perceived conflict between the Phalacrocoracidae and fisheries, shag diet competition has been the subject of substantial scientific interest. Evidence collected at one colony, the Isle of May, Scotland, between 1985 and 2014, suggests that shag chick diet composition in this population has diversified in response to ocean warming. Shags also feed on fewer sandeel on windy days, presumably due to the strong effect of wind on flight in this species. The year-round diet of full-grown shags at this colony has also changed over the past 3 decades, from sandeel specialists to an increasingly diverse prey base.

Wednesday, 11 May 2016

11-5-2016 LAKE BENEARES, VALENCIA - LARGE CARPENTER BEE (Genus Xylocopa)


Carpenter bees are species in the genus Xylocopa of the subfamily Xylocopinae. The genus includes some 500 bees in 31 subgenera. The common name "carpenter bee" derives from their nesting behavior; nearly all species burrow into hard plant material such as dead wood or bamboo. The main exceptions are species in the subgenus Proxylocopa, which dig nesting tunnels in suitable soil.

Many species in this enormous genus are difficult to tell apart; most species are all black, or primarily black with some yellow or white pubescence. Some differ only in subtle morphological features, such as details of the male genitalia. Males of some species differ confusingly from the females, being covered in greenish-yellow fur. The confusion of species arises particularly in the common names; in India, for example, the common name for any all-black species of Xylocopa is bhanvra (or bhomora - ভোমোৰা - in Assamese), and reports and sightings of bhanvra or bhomora are commonly misattributed to a European species, Xylocopa violacea; however, this species is found only in the northern regions of Jammu and Kashmir and Punjab, and most reports of bhanvra, especially elsewhere in India, refer to any of roughly 15 other common black Xylocopa species in the region, such as X. nasalis, X. tenuiscapa, or X. tranquebarorum.

Non-professionals commonly confuse carpenter bees with bumblebees; the simplest rule of thumb for telling them apart is that most carpenter bees have a shiny abdomen, whereas bumblebee abdomens are completely covered with dense hair. Males of some species of carpenter bees have a white or yellow face, unlike bumblebees, while females lack the bare corbicula of bumblebees; the hind leg is entirely hairy.


In several species, the females live alongside their own daughters or sisters, creating a small social group. They use wood bits to form partitions between the cells in the nest. A few species bore holes in wood dwellings. Since the tunnels are near the surface, structural damage is generally minor or superficial. However, carpenter bee nests are attractive to woodpeckers, which may do further damage by drilling into the wood to feed on the bees or larvae.

Carpenter bees have short mouthparts and are important pollinators on some open-faced or shallow flowers; for some they even are obligate pollinators, for example the maypop (Passiflora incarnata) and Orphium, which are not pollinated by any other insects. They also are important pollinators of flowers with various forms of lids, such as Salvia species and some members of the Fabaceae. However many carpenter bees "rob" nectar by slitting the sides of flowers with deep corollae.

Xylocopa virginica is one example of a species with such nectar robbing behavior. With their short labia the bees cannot reach the nectar without piercing the long-tubed flowers; they miss contact with the anthers and perform no pollination. In some plants, this reduces fruit and seed production, while others have developed defence mechanisms against nectar robbing. When foraging for pollen from some species with tubular flowers however, the same species of carpenter bees still achieve pollination, if the anthers and stigmata are exposed together.

11-5-2016 ALCOY, ALICANTE - LARGE CARPENTER BEE (Genus Xylocopa)


Carpenter bees are species in the genus Xylocopa of the subfamily Xylocopinae. The genus includes some 500 bees in 31 subgenera. The common name "carpenter bee" derives from their nesting behavior; nearly all species burrow into hard plant material such as dead wood or bamboo. The main exceptions are species in the subgenus Proxylocopa, which dig nesting tunnels in suitable soil.

Many species in this enormous genus are difficult to tell apart; most species are all black, or primarily black with some yellow or white pubescence. Some differ only in subtle morphological features, such as details of the male genitalia. Males of some species differ confusingly from the females, being covered in greenish-yellow fur. The confusion of species arises particularly in the common names; in India, for example, the common name for any all-black species of Xylocopa is bhanvra (or bhomora - ভোমোৰা - in Assamese), and reports and sightings of bhanvra or bhomora are commonly misattributed to a European species, Xylocopa violacea; however, this species is found only in the northern regions of Jammu and Kashmir and Punjab, and most reports of bhanvra, especially elsewhere in India, refer to any of roughly 15 other common black Xylocopa species in the region, such as X. nasalis, X. tenuiscapa, or X. tranquebarorum.


Non-professionals commonly confuse carpenter bees with bumblebees; the simplest rule of thumb for telling them apart is that most carpenter bees have a shiny abdomen, whereas bumblebee abdomens are completely covered with dense hair. Males of some species of carpenter bees have a white or yellow face, unlike bumblebees, while females lack the bare corbicula of bumblebees; the hind leg is entirely hairy.

The wing venation is characteristic; the marginal cell in the front wing is narrow and elongated, and its apex bends away from the costa. The front wing has small stigma. When closed, the bee's short mandibles conceal the labrum. The clypeus is flat.[3] Males of many species have much larger eyes than the females, which relates to their mating behavior.

In the United States, two eastern species, Xylocopa virginica and X. micans, occur. Three more species are primarily western in distribution, X. sonorina, X. tabaniformis orpifex, and X. californica. X. virginica is by far the more widely distributed species.