The beach stone-curlew (Esacus magnirostris) also known as beach thick-knee is a large, ground-dwelling bird that occurs in Australasia, the islands of South-east Asia. At 55 cm (22 in) and 1 kg (2.2 lb), it is one of the world's largest shorebirds. At a mean of 1,032 g (2.275 lb) in males and 1,000 g (2.2 lb) in females, it the heaviest living member of the Charadriiformes outside of the gull and skua families. A single egg is laid just above the high tide line on the open beach, where it is vulnerable to predation and human disturbance.