Hartlaub's Gull vs Large-billed Tern

Hartlaub's Gull

Chroicocephalus hartlaubii

Medium288 gCoastal

Hartlaub's gull is 37–39 cm in length, with a wingspan of 89–92 cm and a weight of 235–340 g. It is a mainly white gull with a grey back and upperwings, black wingtips with conspicuous white "mirrors", and a dark red bill and legs. When breeding it has a very faint lavender grey hood, but otherwise has a plain white head. The sexes are similar. This species differs from the slightly larger grey-headed gull in its thinner, darker bill, deeper red legs, paler, plainer head, and dark eyes. It takes two years to reach maturity. Juvenile birds have a brown band across the wings.

ID text from Wikipedia, CC BY-SA 4.0

Photo: salsaboy on Flickr · CC BY 2.0

Large-billed Tern

Phaetusa simplex

Medium235 gRiverine

The large-billed tern is large, short-tailed tern with a large yellow bill. It is around 38 cm (15 in) in overall length and weighs 208–247 g (7.3–8.7 oz). The crown and ear-coverts are black, the upperparts are grey, the secondaries, primary coverts, lores and underparts are white. The legs and feet are yellow. A non-breeding adult has a paler crown and forehead.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Arthur Chapman · CC BY 2.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Hartlaub's Gull and Large-billed Tern.