Thick-Knees: Burhinidae - Physical Characteristics, Diet, Behavior And Reproduction, Beach Thick-knee (esacus Magnirostris): Species Account - GEOGRAPHIC RANGE, HABITAT, THICK-KNEES AND PEOPLE, CONSERVATION STATUS
Thick-knees are found primarily in the Old World, including portions of Asia, Europe, the Middle East, and Africa. Two species occupy parts of Central America and South America, and several species occur in Australia.
Many species of thick-knees are found in either grassland or brush habitats. Others occupy dry desert areas, usually adjacent to a river or stream. The beach thick-knee is found in seashore areas. One species, the Senegal thick-knee, lives in large cities such as Cairo, Egypt, where it finds appropriate nesting areas on the flat roofs of houses and other buildings. Several species of thick-knees are occasionally found in agricultural lands and pastures.
Thick-knees appear in Australian folklore, where they have been given names that sound like their calls, such as "weeloo" or "willaroo." One species, the double-striped thick-knee, has been kept in farms and other human settlements to reduce the number of insects.
In Europe, stone-curlew populations have declined due to habitat destruction for agricultural development. Peruvian thick-knees are also declining in their habitats due to human disturbance. Bush thick-knees in Australia have declined due to habitat loss as well as hunting, egg collection, and predation, hunting, by foxes.
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Thick-knees vary in size from 12.5 to 23 inches (32 to 59 centimeters) in length and 0.7 to 2.4 pounds (0.3 to 1.1 kilograms) in weight. Their heads are round, their necks are slender, and their bodies are large. Thick-knees have long legs, long tails, and a pointed bill. All thick-knees have large yellow or amber colored eyes and stripes either above the eyes, through the eyes, or below the eyes.…
Thick-knees have a diet that consists primarily of invertebrates, animals without a backbone, such as beetles, crickets, grasshoppers, crustaceans, mollusks, snails, slugs, and worms, as well as larger vertebrate prey, animals with backbones, such as frogs, lizards, and rodents. Some thick-knees will also eat plant material, including seeds and the shoots of plants. The beach thick-knee eats large…
Some thick-knees, such as the stone-curlew, are generally found alone. Other thick-knees are often found in small groups. All thick-knees spend the majority of their time on the ground, usually perching no higher than a few feet off the ground. However, thick-knees are strong fliers and will fly away if disturbed by intruders. Many species of thick-knees are nocturnal, quiet by day and active at n…
Physical characteristics: The beach thick-knee is the largest species of thick-knee and ranges from 21 to 22.5 inches (53 to 57 centimeters) in length. It has thick yellow legs, a long, strong, bill, and yellow eyes. The beach thick-knee is gray-brown on the back and pale on the belly. The shoulder is black above a thin white line. The head is mostly black, with a white stripe through the eye. The…
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