Beach stone-curlew

"Burhinus magnirostris" redirects here. For the species formerly known by this name, see Bush stone-curlew.

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.

Beach stone-curlew
A beach stone-curlew in the Mangroves at Yardie Creek, WA.
Conservation status
Near Threatened  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Charadriiformes
Family:	Burhinidae
Genus:	Esacus
Species:	E. magnirostris
Binomial name
Esacus magnirostris (Vieillot, 1818)
E. magnirostris range   E. recurvirostris range
Synonyms
Esacus neglectus Burhinus giganteus Wagler, 1829 Burhinus magnirostris

It is less strictly nocturnal than most stone-curlews, and can sometimes be seen foraging by daylight, moving slowly and deliberately, with occasional short runs. It tends to be wary and fly off into the distance ahead of the observer, employing slow, rather stiff wingbeats..

The beach stone-curlew is classified as Near Threatened on the IUCN Red List of Threatened Species. In New South Wales it is listed as critically endangered.^[2]

Distribution

The beach stone-curlew is a resident of undisturbed open beaches, exposed reefs, mangroves, and tidal sand or mudflats over a large range, including coastal eastern Australia as far south as far eastern Victoria, the northern Australian coast and nearby islands, New Guinea, New Caledonia, Indonesia, Malaysia, and the Philippines. It is uncommon over most of its range, and rare south of Cairns.

Description

The beach stone-curlew is 54-56 cm (21-22 in) long. At a mean of 1,032 g (2.275 lb) in males and 1,000 g (2.2 lb) in females, it is the heaviest living member of the Charadriiformes outside of the gull and skua families.^[3][4] They have black and white face patterning, yellow eyes and a grey-brown upper body.

Ecology

Beach stone-curlew forage on low tide muddy sand for invertebrates, mostly crabs.^[5][6]

Breeding

The bird breeding season is September to November. The bird nests in sand, laying one egg per season just above the high tide line on the open beach, where it is vulnerable to predation and human disturbance.^[7] The egg is vulnerable to Both parents care of the young until they reach 7-12 months of age.^[6][8][7]

Call

As an alarm, the bird will make a chwip-chwip to ward creatures away from their territory.^[7]

Gallery

• 
  At Inskip Point, SE Queensland, Australia
• 
  On Green Island off Cairns
• 
  At Cape Tribulation, north Queensland, Australia