Common Tern

Sterna hirundo

(S. h. hirundo)

Armenian Name: Գետային ջրածիծառ
Species Status: Threatened Species - Species of Special Concern
Common Tern

See Plate 33 for Common Tern and other similar species

Resident Status: Breeding bird
Abundance: Uncommon
Length:31-35 cm, Wing Span:77-98 cm
Distribution Map: Map 168.
Description: Pale gray upperparts, white underparts, long bill, long thin wings with dark-tipped primaries, and deeply-forked tail.
Adult (Breeding): Black crown, black-tipped red bill.
Adult (Non-breeding): White forehead, blacker bill.
Juvenile: Dark head markings, brown edges on upperparts, and dark leading edge on wing.
Similar Species: Differs from non-breeding Whiskered Tern by larger size, and longer bill, wings, and tail.
Behavior: When fishing, flies with slow wingbeats and head lowered. Often hovers before diving.
Habitat: Fish ponds, lakes.
Food: Fish, invertebrates.
Nest: Shallow ground scrape.
Eggs: 41 mm, 1-3, off-white, dark brown spots.