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The clay-colored thrush is the national bird of Costa Rica. Although Costa Rica is a small country, it is in the bird-rich neotropical region and has a huge number of species for its area. The official bird list published by the Costa Rican Rare Birds and Records Committee of the Asociación Ornitológica de Costa Rica (AOCR) contained 948 ...
For a lone potoo, or a brooding adult with a potential predator close to the nest, the bird attempts to avoid detection by remaining motionless and relying on camouflage. If ineffective, the potoo breaks cover and attempts to intimidate the predator by opening its beak and eyes wide open while vocalizing or simply flies out of reach.
Costa Rica's birds range in size from the scintillant hummingbird, at 2.2 grams and 6 cm (2.4 in), to the huge jabiru, at 6.5 kg (14.3 lb) and 150 cm (60 in) (the American white pelican is heavier, but is an accidental species).
Breeding has been recorded as typically February to August, but depending on the portion of this bird's range breeding birds can be met with almost year-round. [11] The nest is a slight depression on a thick tree branch, [ 12 ] at least 10 m (33 ft) above ground, with a single white (slightly spotted) egg measuring about 5.2 cm × 3.8 cm (2.0 ...
The male Chiriqui quail-dove is 27 to 31 cm (11 to 12 in) long and the female 26 to 32 cm (10 to 13 in). Adults weigh between 295 and 308 g (10.4 and 10.9 oz). The adult male has a slate gray crown that is paler on the forehead and darker on the nape. The rest of the face is buffy with a black malar stripe and a thin black line through the eye ...
The gray hawk is found from Costa Rica north into the southwestern United States. The gray hawk is 46–61 cm (18–24 in) in length and weighs 475 g (16.8 oz) on average. The adult has a pale gray body, the tail is black with three white bands and the legs are orange. It is a solid, unpatterned gray on the upper parts.
Its weight is 0.9–1.6 kg (2.0–3.5 lb), averaging 1,348 g (2.972 lb) in seven birds from Tierra del Fuego. [ 14 ] [ 15 ] Individuals from the colder southern part of its range average larger than those from tropical regions (as predicted by Bergmann's rule ) and are the largest type of caracara.
In Costa Rica. The riverside wren is 13 to 14 cm (5.1 to 5.5 in) long and weighs 17 g (0.60 oz). The adults have a bright orange-brown crown; chestnut nape, back, and rump; and a blackish tail with buff-white bars. They have a black-over-white supercilium and the rest of the face is streaked and spotted black and white. From throat to vent ...