GULL-BILLED TERNS

Gull-billed Tern, Abaco (Alex Hughes) 01

GULL-BILLED TERNS ON ABACO

The gull-billed tern Gelochelidon nilotica had a name upgrade from Sterna nilotica some years ago, and was awarded the honour of its own genus. Let’s be clear at the outset: there’s no such thing as a tern-billed gull, which slightly lessens the scope for species confusion. 

Gull-billed Tern, Abaco (Alex Hughes) 04

Gull-billed Tern, Abaco (Alex Hughes) 05

There are 12 species of tern recorded for Abaco. Only one, the royal tern, is a permanent resident. There is one winter resident, the Forster’s tern and there a 6 summer resident terns of varying degrees of commonness. The other four are transient or vagrant, and probably not worth making a special trip to Abaco to find. The GBT is designated SB3, a summer breeding resident that is generally uncommon, though might be more common in particular areas.

TERN TABLE**Tern Species Abaco**I know! Too tempting…

gull-billed-tern

Gull-billed Tern, Abaco (Alex Hughes) 11

The bird gets its name from it short, thick gull-like bill. It’s quite large in tern terms, with a wingspan that may reach 3 foot. They lose their smart black caps in winter.

Gull-billed Tern, Abaco (Alex Hughes) 03

There are 6 species of GBT worldwide, and it is found in every continent. While many terns plunge-dive for fish, the GBT mostly feeds on insects in flight, and will also go after birds eggs and chicks. Small mammals and amphibians are also on the menu.

Gull-billed Tern, Abaco (Alex Hughes) 06Gull-billed Tern, Abaco (Alex Hughes) 02

All photos were taken by Alex Hughes, a contributor to “THE BIRDS OF ABACO”, when he spent some time on Abaco a while back in connection with the conservation of the Abaco Parrot and the preservation of the habitat integrity of their nesting area in the Abaco National Park

Gull-billed Tern, Abaco (Alex Hughes) 12

Advertisements

FIVE GULL SPECIES ON ABACO

Herring Gull (ad, nb) BH

There are 8 gull species recorded on Abaco. The 5 species shown here all feature in the new ‘DELPHI CLUB GUIDE TO THE BIRDS OF ABACO’.  The others are the occasional vagrants Black-legged Kittiwake and Black-headed Gull;  and the rare winter visitor Great Black-backed Gull.  We do in fact have a Black-headed Gull in the archive (in winter plumage), but it was taken on New Providence and wasn’t eligible for inclusion in a book of Abaco birds. Even as a cheat.

Black-headed Gull (winter plumage) NPBlack-headed Gull (adult, winter plumage) WB

HERRING GULL (& header image) (WR 2)herring-gull-5Herring Gull WB P1000298 small

BONAPARTE’S GULL (WR 4)Bonaparte's Gull BHBonaparte's Gull BH (Ad NB) SMALL

LAUGHING GULL  (PR B 1)Laughing Gull4_-NHlaughing-gulls2 EG

LESSER BLACK-BACKED GULL (WR 2)Lesser Black-backed Gull (ad, nb) BH Lesser Black-backed Gull WB

RING-BILLED GULL (WR 1)Ring-billed Gull (Nina Henry : DCB)Ring-billed Gull BH (ad nb)

Photo Credits: Bruce Hallett, Woody Bracey, Nina Henry, RH