(US, dated) white-throated sparrow, an American sparrow (Zonotrichia albicollis) with a conspicuous white throat.

A bird that is unable to fly due to one or both of its wings being broken. / (aviation) An unflyable aircraft, particularly one that has been grounded or downed.

Knotgrass (Polygonum aviculare).

Synonym of dodo

(Guernsey) The Eurasian wryneck (Jynx torquilla).

The sap of a birch tree.

(ornithology) A migratory bird, especially a passage migrant (“a bird that stops somewhere for a short time during a seasonal migration”).

(organic chemistry) Any organic compound composed of two aryl groups linked together

Alternative form of shorebird

In a biracial manner.