|Beach Stone-Curlew (Esacus magnirostris)|
|File:Esacus recurvirostris magnirostris range.png|
|Light green shows distribution of E. giganteus. Dark green shows distribution of E. recurvirostris.|
Esacus is a genus of bird in the stone-curlew family Burhinidae. The genus is distributed from Pakistan and India to Australia. It contains two species, the Great Stone-Curlew and the Beach Stone-Curlew.
Distribution and habitat
The Beach Stone-Curlew is found in coastal areas, as its name suggests, seldom found far from the coast. The Great Stone-Curlew also favours water, often found close to large lakes or on the river shore. Like the Burhinus stone-curlews the Great Stone-Curlew is nocturnal, but the beach-stone curlew is less so, and feeds during the day on beaches and islands. The beach curlew is found from the Andaman Is through Indonesia to Australia and New Caledonia. The Great Stone-Curlew is found from coastal Iran and Pakistan through central India, Burma, Thailand to Hainan in China.
They feed on crabs and other invertebrates; the Great Stone-Curlew uses its large bill to overturn stones to find prey, and the Beach Stone-Curlew uses its bill to break up crabs and eat them, which it catches by stalking them like a heron.
The Esacus stone-curlews make harsh wailing calls. The Great Stone-Curlew is a seasonal breeder, timing it before the start of the monsoon. The timing of the beach stone-curlew is more variable across its large range. The Beach Stone-Curlew is the only member of the family not to lay a clutch of two or three eggs, and lays a single egg.
- Great Stone-Curlew, or Great Thick-knee (Esacus recurvirostris)
- Beach Stone-Curlew, or Beach Thick-knee (Esacus magnirostris)
- ^ a b c d Hume, R. & Bonan, A. (2017). Thick-knees (Burhinidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/52241 on 12 March 2017)
- ^ a b c Hume, R., Kirwan, G.M. & Boesman, P. (2017). Beach Thick-knee (Esacus magnirostris). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/53774 on 12 March 2017).
- ^ a b Hume, R. & Kirwan, G.M. (2017). Great Thick-knee (Esacus recurvirostris). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/53773 on 12 March 2017).
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