Chủ Nhật, 11 tháng 3, 2012

Coppersmith barbet

Megalaima haemacephala

Photo by Rajiv Lather (Birding in India and South Asia)

Common name:
coppersmith barbet (en); barbudo-de-peito-vermelho (pt); barbu à plastron rouge (fr); barbudo calderero (es); kupferschmied (de)

Taxonomy:
Order Piciformes
Family Capitonidae

Range:
This species is found in southern Asia, from north-eastern Pakistan, through India, Sri Lanka, Nepal and Bangladesh, and into southern China, the Malay Peninsula, Indonesia and the Philippines.

Size:These birds are 15-17 cm long and weigh 30-53 g.

Habitat:Coppersmith barbets are mostly found in moist forests, but also in dry deciduous woodlands, along forest edges, in teak forests, mangroves, irrigated orchards and plantations with fruiting trees, and urban areas that contain trees. They are present from sea level up to an altitude of 2.250 m.

Diet:They mostly eat wild figs and other fruits and berries, but also insects such as beetles, crickets, mantids and various insect larvae.

Breeding:These birds breed in December-September. They nest in a hole, excavated by both sexes in a tree trunk or branch, often on the underside of an horizontal branch. There the female lays 2-4 eggs which are incubated by both sexes for 12-14 days. The chicks are fed by both parents and fledge 5 weeks after hatching. Each pair may raise 1-2 broods per season.

Conservation:IUCN status - LC (Least concern)
The coppersmith barbet has a very large breeding range and is reported to be widespread and common throughout this range. The species has expanded in range, as it can easily adapt to man-made and altered habitats.

Thứ Bảy, 10 tháng 3, 2012

Boat-tailed grackle

Quiscalus major

Photo by Connie Denyes (Wikipedia)

Common name:
boat-tailed grackle (en); iraúna-dos-paúis (pt); quiscale des marais (fr); zanate marismeño (es); bootschwanzgrackel (de)


Taxonomy:
Order Passeriformes
Family Icteridae


Range:
This species is found breeding along the eastern coast of North America, from New York to Florida, and along the Gulf of Mexico coast to Texas. Some populations migrate south and may reach northern Mexico.


Size:
These birds are 26-37 cm long and have a wingspan of 39-50 cm. They weigh 90-240 g.


Habitat:
The boat-tailed grackle is mostly found in coastal saltwater marshes, but also in inland wetlands near the coast, in agricultural fields and even in urban areas.


Diet:
They mostly eat small crabs, shrimps and other aquatic invertebrates, but also insects, earthworms, seeds and fruits. Rice is an important part of their diet in autumn and they are also known to eat small lizards, frogs, turtles, eggs and even garbage.


Breeding:
Boat-billed grackles nest in colonies. Both males and females are often promiscuous and the females are responsible for building the nest, a bulky cup of twigs, grass, weeds and bulrushes placed in a tree or bush near water. The female lays 2-5 light blue eggs with dark spots, which she incubates alone for 13-15 days. The chicks are fed only by the female and fledge 20-23 days after hatching. This species produces 2-3 clutches per year.


Conservation:
IUCN status - LC (Least concern)
This species has a relatively large breeding range and a global population estimated at 4 million individuals. The population has undergone a large increase of 16% per decade over the last 40 years.

Thứ Sáu, 9 tháng 3, 2012

Australian painted-snipe

Rostratula australis

Photo by Eric Tan (Feather and Photos)

Common name:
Australian painted-snipe (en); narceja-pintada-australiana (pt); rhynchée d'Australie (fr); aguatero australiano (es); Australier-goldschnepfe (de)


Taxonomy:
Order Charadriiformes
Family Rostratulidae


Range:
This species is endemic to Australian, being mostly found at scattered locations throughout much of Queensland, New South Wales, Victoria and south-eastern South Australia. It has also been occasionally recorded further west in South Australia, the Northern Territory and Western Australia.


Size:
These birds are 22-25 cm long and have a wingspan of 50-54 cm. They weigh 120-140 g.


Habitat:
Australian painted snipes are found in ephemeral and permanent terrestrial shallow freshwater wetlands, and occasionally brackish wetlands, including lakes, swamps, saltmarshes and claypans. It can also occupy modified habitats including sewage farms, dams, bores and irrigation schemes.


Diet:
These birds are mostly crepuscular, eating vegetation, seeds, insects, worms and molluscs, crustaceans and other invertebrates.


Breeding:
They mostly breed in August-March. These birds are polyandrous and the parental roles are reversed, so the females mate and lay eggs in several nests, after which each male is responsible for all duties of incubating and raising the chicks. They are loosely colonial, although nests are widely separated, and each male constructs the nest among tall vegetation, frequently on small muddy islands, but also sometimes on the shore of wetlands. There the female lays 3-4 cream-coloured eggs with black streaks, which the male incubates for 15-21 days. The chicks are precocial, leaving the nest within hours of hatching, but the male protects and broods them for several weeks.


Conservation:
IUCN status - EN (Endangered)
This species has a large breeding range, but it is sparsely distributed and the global population is estimated at just 1.000-2.500 individuals. The population has undergone a large decline of 20-50% over the last 3 decades, and this decline is likely to continue in the future, being caused by the loss of wetland habitats. The two major causes of this loss have been the drainage of wetlands and the diversion of water to agriculture and reservoirs. The replacement of endemic wetland vegetation by invasive weeds may also render habitats less suitable or even totally unsuitable for the species, and grazing and associated trampling of wetland vegetation by cattle may also be a threat to these birds in certain regions, particularly where grazing tends to become concentrated around wetlands in the dry season.

Thứ Năm, 8 tháng 3, 2012

Purple-crested turaco

Tauraco porphyreolophus

(Photo from Internet Bird Collection)

Common name:
purple-crested turaco (en); turaco-de-crista-violeta (pt); touraco à huppe splendide (fr); turaco crestimorado (es); glanzhaubenturako (de)


Taxonomy:
Order Cuculiformes
Family Musophagidae


Range:
This African species is found from Uganda and Tanzania to Mozambique, Zimbabwe, Swaziland and eastern South Africa.


Size:
These birds are 40-46 cm long and weigh 200-290 g.


Habitat:
Purple-crested turacos are mostly found in dense moist woodlands and evergreen forests, often along river banks. They are also found in thick scrublands, coastal forests, plantations and rural gardens. These birds are present from sea level up to an altitude of 1.850 m.


Diet:
They mostly eat the fruits of a wide variety of plants, mostly wild native plants but also cultivated fruits like guava and mulberry. They sometimes also eat insects and snails.


Breeding:
The purple-crested turaco breeds in August -February. The nest is built by both sexes, consisting of a shallow cup made of twigs and sticks, placed in matted creepers, dense mistletoe or isolated thorn trees, up to 4 m above the ground. The female lays 2-4 eggs which are incubated by both parents for 21-25 days. The chicks fledge 3-5 weeks after hatching.


Conservation:
IUCN status - LC (Least concern)
This species has a very large breeding range and, although the global population size has not been quantified, the species is reported to be localised but quite common in most parts of its southern African range. The population is suspected to be in decline owing to ongoing habitat destruction and unsustainable levels of hunting in Tanzania, but they seem to be able to adapt to human interference better than other turacos, as they started to move into suburban gardens and alien vegetation.

Thứ Tư, 7 tháng 3, 2012

Grey-backed tachuri

Polystictus superciliaris

Photo by Rafael Fortes (Bird Forum)

Common name:
grey-backed tachuri (en); papa-moscas-de-costas-cinzentas (pt); tyranneau bridé (fr); tachurí gris (es); graunacken-grastyrann (de)


Taxonomy:
Order Passeriformes
Family Tyrannidae


Range:
This South American species is endemic to south-eastern Brazil, being found from Bahia to Minas Gerais and northern São Paulo.


Size:
These birds are 10 cm long and weigh 6 g.


Habitat:
Grey-backed tachuris are found in arid mountain scrublands, deserted pastures and rocky outcrops in savannas and dry grasslands, at altitudes of 900-2.300 m.


Diet:
They feed on small arthropods, namely Coleoptera, Hemiptera, Lepidoptera and Orthoptera.


Breeding:
These birds breed in June-December. The nest is a deep cup made of grasses, leaf fragments, flowers and other plant fibres, and lined with feathers. The nest is placed in the fork of a branch stemming directly from the trunk of a bush, up to 1 m above the ground, and it is attached to the branches with spider webs and silk from butterfly cocoons. The female lays 2 white or light cream eggs, which she incubates alone for 16-19 days. The chicks are fed by both parents and fledge 15-18 days after hatching, but may continue to receive food for another 1-3 weeks.


Conservation:
IUCN status - LC (Least concern)
This species has a relatively large breeding range, but it is described as uncommon. The population is suspected to be in decline owing to habitat loss caused by conversion to cattle ranches and mining operations, but it is not considered threatened at present.

Thứ Ba, 6 tháng 3, 2012

Congo peafowl

Afropavo congensis

(Photo from Animal Picture Archive)

Common name:
Congo peafowl (en); pavão-do-Congo (pt); paon du Congo (fr); pavo del Congo (es); Kongopfau (de)


Taxonomy:
Order Galliformes
Family Phasianidae


Range:
This African species is endemic to the lowland rainforests of the Congo river basin, in the central parts of D.R. Congo.


Size:
These birds are 60-70 cm long and weigh 1-1,2 kg.


Habitat:
The Congo peafowl is mostly found in lowland primary rainforests, but also in other forests types, including dry forests, often near watersheds. They are present up to an altitude of 1.200 m.


Diet:
They have a fairly diverse diet, which includes various fruits and seeds, as well as insects and other invertebrate.


Breeding:
The breeding season of the Congo peafowl is variable, depending on local rainfall conditions. They are monogamous, apparently living in small family groups, and nest in a scrape or hollow in the ground. The female lays 2-4 eggs, which she incubates alone for 27-28 days. The chicks are precocious and leave the nest soon after hatching, but the parents take care of them for several weeks.


Conservation:
IUCN status - VU (Vulnerable)
This species has a large breeding range, but the global population is estimated at just 2.500-10.000 individuals. The population is suspected to be in decline owing to habitat loss and hunting pressure. Mining and the associated human settlement result in an increasing forest clearing which causes further logging, agricultural development and hunting.

Thứ Hai, 5 tháng 3, 2012

Desert cardinal

Cardinalis sinuatus

(Photo from Wikipedia)

Common name:
desert cardinal (en); cardeal-do-deserto (pt); cardinal gris (fr); cardenal pardo (es); schmalschnabelkardinal (de)

Taxonomy:
Order Passeriformes
Family Cardinalidae

Range:
This species is found in the south-western United States and in northern Mexico.

Size:
These birds are 21 cm long and weigh 24-43 g.

Habitat:
Desert cardinals are found in desert scrublands and mesquite thickets, often along creek beds.

Diet:
These birds do most of their foraging on the ground, eating the seeds of bristlegrass, doveweed, sandbur, pancium, sorghum, and pigweed. They also eat cactus fruit and cottonwood catkins and various insects including grasshoppers, caterpillars, beetles, stinkbugs, and cicadas.

Breeding:
Desert cardinals breed in March-August. The nest is a small cup or bowl, made of grass, twigs or bits of tree bark, placed in the mesquite brush or on the ground against a tree trunk. The female lays 2-4 greyish-white eggs with grey or brown speckles, which she incubates alone for 14 days while being fed by the male. The chicks are fed by both parents and fledge 10 days after hatching, but may only become fully independent 1 month later.

Conservation:
IUCN status - LC (Least Concern)
This species has a very large breeding range and the global population is estimated at 8 million individuals. The population has undergone a small decline over the last few decades, mostly because of habitat loss due to human development.