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Related to thick-knee: stone curlew


common name for terrestrial, Old World birds in the family Burhinidae. The name derives from the bird's thickened tarsal joints. Thick-knees are shy, solitary birds. They are rapid runners with long legs and partially webbed feet, which lack a hind toe. The wings may be long and pointed, or short and rounded, according to species. Generally they fly fast and low but only for short distances. In body length, thick-knees range from 14 to 20 in. (36–51 cm). Members of the genus Burhinus are among the smaller species. Their straight, stout bills are shorter than their heads. Thick-knees of the genus Orthorhamphus have massive bills considerably larger than their heads, while those of the genus Esacus are compressed and slightly upturned. Thick-knees are widely distributed throughout a range of temperate and tropical habitats including shore, scrub, desert, and savanna, but typically in somewhat open country. Their colorations vary with their backgrounds, usually dull gray-brown with darker streaks. They are nocturnal birds, with large, owllike eyes. Their diet consists of a wide range of animals and plants, including insects, small mammals, seeds, and, occasionally, other birds. Their alternate name of stone curlew probably derives from their habit of laying their large eggs directly on bare, stony ground. The eggs range in color from cream to brown, with various darker markings according to local soil colors. Both sexes participate in incubation, and the highly precocious chicks are able to leave the nest almost immediately upon hatching. Thick-knees are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Aves, order Charadriiformes, family Burhinidae.
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Peruvian Thick-knees are scarce throughout much of its world range (Camacho 2012) and remain relatively inactive during daylight hours (Iannacone et al.
Although the eyes poorly reflected the spotlight, Peruvian Thick-knees were easily recognizable from a distance of 100-200 m due to their large size (~40 cm height and 450 g of body mass).
No information on the molt patterns or biometrics of free ranging Peruvian Thick-knees exists in the literature.
During the course of transect counts, we encountered 24 Peruvian thick-knees (of which 30% were already banded) and captured four flight-capable individuals.
When the capture was successful, thick-knees tended to lie still against the ground when the hand net fell over them, an important factor maintaining the integrity of the bird.