Laridae

Chlidonias 1

Black TernChlidonias nigerPhoto © David Yeany · CC BY-NC 4.0

Chroicocephalus 2

Black-headed GullChroicocephalus ridibundusPhoto © Dmitry Dubikovskiy · CC BY-NC 4.0Bonaparte's GullChroicocephalus philadelphiaPhoto © Scott O'Donnell · CC BY-NC 4.0No season shown

Hydrocoloeus 1

Little GullHydrocoloeus minutusPhoto © vyatka · CC BY-NC 4.0

Hydroprogne 1

Caspian TernHydroprogne caspiaPhoto © Jef-B · CC BY-NC 4.0No season shown

Larus 6

Lesser Black-backed GullLarus fuscusEarly in its seasonPhoto © Niall Perrins · CC BY-NC 4.0Late August to late April, middle week Dec 20–26Great Black-backed GullLarus marinusEarly in its seasonPhoto © Alex Shure · CC BY-NC 4.0Early September to mid-April, middle week Jan 4–10Iceland GullLarus glaucoidesPhoto © David McCorquodale · CC BY-NC 4.0Mid-November to mid-March, middle week Jan 18–24American Herring GullLarus smithsonianusPhoto © Guy Lemelin · CC BY-NC 4.0Glaucous GullLarus hyperboreusPhoto © Pavel Shukov · CC BY-NC 4.0No season shownRing-billed GullLarus delawarensisPhoto © Craig K. Hunt · CC BY-NC 4.0

Leucophaeus 2

Franklin's GullLeucophaeus pipixcanPhoto © georg32sea · CC BY-NC 4.0Laughing GullLeucophaeus atricillaPhoto © José Antonio Linage Espinosa · CC BY-NC 4.0

Sterna 2

Common TernSterna hirundoPhoto © Bill Keim · CC BY 4.0Early May to mid-September, middle week May 17–23Forster's TernSterna forsteriPhoto © Bert Filemyr · CC BY-NC 4.0No season shown

Xema 1

Sabine's GullXema sabiniLate in its seasonPhoto © Jennysweatt · CC BY-NC 4.0Mid-September to mid-December, middle week Sep 27 – Oct 3

Missing records do not mean a species is absent.