Showing posts with label Falconidae. Show all posts
Showing posts with label Falconidae. Show all posts

Friday, 5 December 2014

Collared forest-falcon

Micrastur semitorquatus

Photo by Michel Giraud-Audine (GEPOG)

Common name:
collared forest-falcon (en); falcão-relógio (pt); carnifex à collier (fr); halcón-montés collarejo (es); kappenwaldfalke (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species is found from Mexico, as far north as Tamaulipas and Nayarit, through Central America and into South America. In South America, they are found west of the Andes as far south as southern Ecuador and, east of the Andes, as far south as southern Brazil, Paraguay, eastern Bolivia and extreme northern Argentina.

Size:
These birds are 46-58 cm long and have a wingspan of 76-94 cm. They weigh 580-820 g, with males being smaller then females.

Habitat:
The collared forest-falcon is mostly found in lowland rainforests, particularly along forest edges, also using dry tropical forests, mangroves and dry tropical scrublands. They occur from sea level up to an altitude of 1.000 m.

Diet:
They feed on mammals, including squirrels, bats and mice, birds up to the size of  a guan or ibis, lizards, snakes and large insects. They sometimes follow army ant swarms to capture the invertebrates they flush.

Breeding:
These birds nest in various types of cavities, including natural tree cavities, holes in cliff, caves and in abandoned buildings. The female lays 1-3 white eggs, which she incubates alone for 46-48 days while the male brings her food. The chicks are fed by both parents and fledge 46-50 days after hatching, but continue to receive food from parents for at least 4 more weeks.

Conservation:
IUCN status - LC (Least Concern)
This species has an extremely large breeding range and the global population is estimated at 0,5-5 million individuals. The population is suspected to be in decline owing to ongoing habitat destruction.

Friday, 27 June 2014

Yellow-headed caracara

Milvago chimachima

Photo by Celuta Machado (Aves de Rapina Brasil)

Common name:
yellow-headed caracara (en); gavião-carrapateiro (pt); caracara à tête jaune (fr); chimachimá (es); gelbkopfkarakara (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species is found from Costa Rica south to northern Argentina and Uruguay, only east of the Andes mountain chain. They also occur in Trinidad and Tobago.

Size:
These birds are 40-46 cm long and have a wingspan of 81-95 cm. They weigh 280-360 g.

Habitat:
The yellow-headed caracara is mostly found in wet grasslands and savannas, but also uses scrublands, second growths and pastures. They are present from sea level up to an altitude of 2.600 m.

Diet:
They are generalist predators, taking reptiles and amphibians, insects and other invertebrates, small mammals, bird nestlings, carrion and human refuse. They are known to take ticks from cattle.

Breeding:
Yellow-headed caracaras breed in August-December. They nest in a stick platform placed on a scrub or tree, or also on termite mounds or man-made structures. The female lays 2-7 buff-coloured eggs with brown markings, which are incubated for about 22 days. The chicks fledge 17-20 days after hatching.

Conservation:
IUCN status - LC (Least Concern)
This species has an extremely large breeding range and is described as common. The population is increasing owing to deforestation and conversion of lowland forests into cattle ranches.

Saturday, 25 January 2014

Striated caracara

Phalcoboenus australis

Photo by Laurent Demongin (Internet Bird Collection)

Common name:
striated caracara (en); caracará-austral (pt); caracara austral (fr); caracara estriado (es); Falklandkarakara (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species is only foundin Tierra del Fuego and the Falkland Islands.

Size:
These birds are 53-65 cm long and have a wingspan of 114-124 cm. They weigh 1,2 kg.

Habitat:
The striated caracara is found in rocky islands and islets, from the tidal zone to low coastal mountains, using tidal pools, coastal grasslands and rocky areas.

Diet:
This species is highly opportunistic, mostly eating small seabirds such as prions, but also the eggs and chicks of larger seabirds such as penguins and albatrosses, carcasses of seabirds and seals, insects and even young or week sheep.

Breeding:
Striated caracaras breed in December-February, timing hatching of chicks to coincide with the breeding season of seabirds to ensure food supply. The nest is made with twigs and dried grasses, and lined with wool if available, being placed on a rock ledge or under a grass tussock. The female lays 1-4 eggs. There is no information regarding the length of the incubation and fledgling periods, but both parents are known to defend the nest and feed the young.

Conservation:
IUCN status - NT (Near Threatened)
This species has a relatively large breeding range and a global population estimated at 1.000-2.500 individuals. The population is believed to be stable at present, but heavy persecution has greatly reduced the population in the past. No major threats are known to operate on the striated caracara at present.

Thursday, 27 June 2013

Laughing falcon

Herpetotheres cachinnans

Photo by Joaquim Mello (Flickr)

Common name:
laughing falcon (en); acauã (pt); macagua rieur (fr); halcón reidor (es); lachfalke (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species is found from Mexico, throughout Central America and into South America as far south as Peru, Bolivia, Paraguay, southern Brazil and marginally into northern Argentina.

Size:
These birds are 46-56 cm long and have a wingspan of 79-94 cm. The females tend to be larger than the males, weighing 600-800 g while the males weigh 410-680 g.

Habitat:
The laughing falcon is mostly found in along the edges of forested areas, including both moist and dry tropical forests, as well as swamp forests and dry savannas.They are often found in secondary forests, forest clearings and also in open areas with scattered trees, usually avoiding the forest interior. They can also be found in palm groves. This species is present from sea level up to an altitude of 2.400 m.

Diet:
They mainly feed on small snakes, including venemous species such as coral snakes on which they pound on from a perch. They are also known to occasionally take lizards, bats, rodents, centipedes and even fish.

Breeding:
Laughing falcons are probably monogamous. The breeding season varies across its range and they nest in a rock crevice, tree cavity or on an abandoned nest of other raptors, up to 33 m above the ground and usually away from immediate vegetation. There the female lays 1-2 white eggs with brown spots, which she incubates alone for 40-42 days. The chicks are fed by both parents and leave the nest about 1 month after hatching but continue to be taken care by the parents for some time longer.

Conservation:
IUCN status - LC (Least Concern)
This species has an extremely large breeding range. The population is estimated at 500.000-5.000.000 individuals and is known to have declined drastically locally but is still common in many areas.

Tuesday, 12 March 2013

Mauritius kestrel

Falco punctatus

Photo by Andy Jones (Flickr)

Common name:
Mauritius kestrel (en); peneireiro-das-Maurícias (pt); crécerelle de Maurice (fr); cernícalo de Mauricio (es); Mauritiusfalke (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species is endemic to the island of Mauritius, in the Indian Ocean, where it is mainly restricted to the south-western plateau.

Size:
These birds are 20-26 cm long and have a wingspan of around 45 cm. They weigh around 110 g.

Habitat:
The Mauritius kestrel is mainly found in sub-tropical evergreen forests, but an also be seen in degraded and open areas, such as secondary forests and savannas, grasslands and scrublands. They tend to avoid agricultural areas, possibly due to a lack of isolated mature trees to use as vantage points. They are present from sea level up to an altitude of 800 m.

Diet:
They mainly prey on the endemic arboreal Phelsuma geckos, but also take small birds, insects and introduced mice and shrews.

Breeding:
Mauritius kestrels are monogamous and territorial, and breed in November-March. They nest in cavities in trees or rocks, or more recently in nests boxes, where the female lays 4-5 white eggs with brown speckles. The eggs are incubated for 28-39 days and the chicks fledge about 5 weeks after hatching and stay in the natal territory until the next breeding season.

Conservation:
IUCN status - VU (Vulnerable)
This species has a small breeding range and a global population estimated at just 250-300 individuals. The current population trend in uncertain, but it may be declining after an increase detected in the last decade. Since the colonizationof the island, deforestation has reduced the forest area in Mauritius to less than 3% of the original, which as greatly limited habitat availability for this species. More recently, the main threats affecting the Mauritius kestrel are poisoning by organochloride pesticide, nest predation by introduced predators such as black rats Rattus rattus, crab-eating macaques Macaca fascicularis, Indian mongooses Herpestes javanicus and feral cats, and high rates of inbreeding due to the small population size. The introduction of exotic plants may also reduce habitat quality and climate change may affect this species through changes in rain patterns. Conservation actions such as supplementary feeding, captive breeding, construction of nest-boxes and nest protection have had some limited success in halting population declines.

Sunday, 4 November 2012

Collared falconet

Microhierax caerulescens

Photo by Guy Poisson (Internet Bird Collection)

Common name:
collared falconet (en); falcãozinho-de-colar (pt); fauconnet à collier (fr); falconete acollarado (es); rotkehlfälkchen (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species is found in from Nepal, southern China ans northern India, through Bhutan, Bangladesh and Myanmar, and into southern Vietnam and Thailand.

Size:
This tiny falcon is 15-18 cm long and has a wingspan of 30-34 cm. They weigh 35-50 g.

Habitat:
The collared falconet is found in deciduous and evergreen forests, and in open woodlands, especially in forests clearing and along forest edges. They are present at altitudes of 200-800 m.

Diet:
They mainly feed on insects, especially butterflies, but also dragonflies, lantern flies, grasshoppers, beetles, and cicadas. They are also known to hunt small forest birds and lizards.

Breeding:
Collared falconets breed in February-May. They nest in old woodpecker or barbet nests, lined with dry leaves, usually 6-12 m above the ground. There the female lays 4-5 white eggs, sometimes with small reddish spots. The female is responsible for most of the incubation and the chicks are fed by both the breeding pair and up to 3 other adults. There is no information regarding the length of the incubation and fledging periods.

Conservation:
IUCN status - LC (Least Concern)
This species has a very large breeding range and is described as common in parts of its range. The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Monday, 28 May 2012

New Zealand falcon

Falco novaeseelandiae

Photo by Steve Attwood (Steve X2)

Common name:
New Zealand falcon (en); falcão-maori (pt); faucon de Nouvelle-Zélande (fr); halcón maorí (es); maorifalke (de)


Taxonomy:
Order Falconiformes
Family Falconidae


Range:
This species is endemic to New Zealand, being found in both the North Island and the South Island, as well as in Stewart Island and its outliers, and the Auckland Islands.


Size:
These birds are 36-48 cm long and have a wingspan of 66-91 cm. They weigh 420-600 g.


Habitat:
The New Zealand falcon is mostly found in forests and scrublands, but also grasslands, pastures and rough farmland. They occur from sea level up to an altitude of 2.100 m.


Diet:
They mostly hunt birds, up to the size of a heron or duck, but will also hunt small mammals up to the size of a hare, insects, small reptiles and will sometimes also eat carrion.


Breeding:
These birds breed in September-February. The nest in a simple scraped hollow on a sheltered cliff edge, in an epiphyte high in a tree, or on the ground under a log or bush. There the female lays 2-4 reddish brown eggs, which are incubated by both parents for 29-35 days. The chicks fledge 32-35 days after hatching, but only become fully independent 3 months later. Each pair raises a single brood per season.


Conservation:
IUCN status - NT (Near Threatened)
The New Zealand falcon has a relatively large breeding range and the global population size is estimated at 2.500-10.000 individuals. The population is suspected to be in decline due to habitat destruction through forest clearance, human persecution especially by pigeon and poultry keepers, and egg predation by the introduced brush-tailed possum Trichosurus vulpecula.

Thursday, 22 December 2011

Southern crested caracara

Caracara plancus

Photo by Luis Argerich (Wikipedia)


Common name:

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This South American species if found from central Peru and Bolivia, east to the Amazon Delta, in Brazil, and south through Brazil, Chile, Paraguay, Uruguay and Argentina all the way to Tuerra del Fuego. they are also found in the Falkland islands.

Size:
These birds are 50-65 cm long and have a wingspan of 120-144 cm. They weigh 0,9-1,6 kg.

Habitat:
Southern crested caracaras are found in virtually any open or semi-open habitat within range, generally avoiding dense humid forests. They are often found in agricultural areas and near human settlements, and can also be found in marshes and swamps.

Diet:
These birds are opportunistic feeders, eating a wide range of carrion and live animals, particularly road kills. They will often follow plows and tractors to obtain exposed food items and can also eat marine turtle eggs, bird eggs and nestlings, and even feed on vegetable matter, including peanuts, beans, avocados, and palm fruits. They are also known to attack newborn lambs and are kleptoparasitic, robbing food from other bird species.

Breeding:
Southern crested caracaras breed in May-February. The nest is made of crude banches and lined with animal hair. It is generally placed on the top of a tall tree, although when trees are not available they are also known to nest on the ground. The female lays 2-3 whitish to reddish-orange eggs with brown spots, which are incubated for 28-32 days. Typically only 1 chick is fledged, leaving the nest around 3 months after hatching.

Conservation:
IUCN status - LC (Least concern)
This species has a very large breeding range and is described as common. The population is suspected to be increasing owing to creation of suitable habitat through deforestation and increased cattle-ranching and sheep-rearing

Monday, 28 March 2011

Amur falcon

Falco amurensis


Common name:

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species breeds in south-eastern Siberia, northern China and North Korea and has an extremely long migration, wintering in southern Africa in Zambia, Zimbabwe, Botswana, Mozambique and north-eastern South Africa.

Size:
Amur falcons are 26-30 cm long and have a wingspan of 63-71 cm. Females tend to be larger than male, weighing 111-188 g, while males weigh 97-155 g.

Habitat:
These bird typically inhabit open woodland, including marshy and riverine woodland, as well as wooded steppe around boreal coniferous forests. In winter, they may be found in savanna and grassland, roosting communally in clumps of trees, and often roosting in towns.

Diet:
Their main prey are insects, namely locusts, grasshoppers, beetles and flying termites, usually taken in flight. They can also hunt small mammals and birds, amphibians and reptiles. The young are mostly fed vertebrate prey, while adults are predominantly insectivorous.

Breeding:
Amur falcons typically lay their eggs in May-June. Breeding pairs are either solitary or form small colonies. The nests can be built on tree holes, but most often an abandoned nest is used, usually from corvids like Corvus frugilegus or from other raptors. There the female lays 3-4 white eggs which are incubated by both parents for 28-30 days. Both parents feed the chicks, who fledge about 1 month after hatching.

Conservation:
IUCN status - LC (Least concern)
This species has a global population of 1 million individuals and a very large breeding range. Some of the grassland regions they favour during winter are under severe pressure from agriculture and afforestation, but the population is believed to be stable and they are not considered threatened at present.

Friday, 26 November 2010

Madagascar kestrel

Falco newtoni

Photo by Alberto Rios (Internet Bird Collection)

Common name:
Madagascar kestrel (en); peneireiro-de-Madagáscar (pt); crécerelle malgache (fr); cernícalo de Madagascar (es); Madagaskarfalke (de)

Taxonomy:
Order Falconiformes
Family Falconidae

Range:
This species occurs in Madagascar, Mayotte, the Comores, and in the Aldabra atoll, in the Seychelles.

Size:
This small raptor is 30 cm long and has a wingspan of 38-42 cm. The males weigh 112-118 g. The females are slightly larger weighing up to 128 g.

Habitat:
The Madagascar kestrel can be found from sea level up to an altitude of 2000 m. They occur in any vegetation-covered open habitat, as well as in grasslands, croplands and secondary vegetation. They are also common in the vicinity of human settlements which may be the preferred habitat in some areas. They are uncommon in forests.

Diet:
They mostly eat insects, particularly grasshoppers, which are taken during flight. They can also hunt small birds, frogs, lizards and mammals.

Breeding:
The Madagascar kestrel nests on rock ledges, in buildings, tree holes or even in the nests of other birds, like the pied crow Corvus albus. Egg laying usually takes place in September. Each clutch is composed of 3-5 rufous-coloured eggs, which are incubated by the female for 27-29 days. The male feeds the female during incubation. The chicks are fed by both male and female until fledging, which takes place 23-24 days after hatching. The young disperse from the natal area at about 44-45 days of age.

Conservation:
IUCN status – LC (Least concern)
This species as a large breeding range and a population estimated at 100.000 individuals. The population is increasing owing to an increase in suitable habitat caused by cultivation, urbanization and deforestation. Overall the species is not considered threatened at present.