Bonaparte's Gull
Chroicocephalus philadelphia
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderCharadriiformes (Caradriformes)
- FamilyLaridae (Gulls, Terns, and Skimmers)
- GenusChroicocephalus (Masked Gulls and allies)
- SpeciesChroicocephalus philadelphia (Bonaparte's Gull)
Bonaparte's gull (Chroicocephalus philadelphia) is a gull found mainly in northern North America. At 28 to 38 cm (11 to 15 in) in length, it is one of the smallest species of gull. Its plumage is mainly white with grey upperparts. During breeding season, Bonaparte's gull gains a slaty-black hood. The sexes are similar in appearance. Wikipedia →
Closest Relatives at Vatnajokull National Park
Black-headed Gull
Chroicocephalus ridibundus
Arctic Tern
Sterna paradisaea
European Herring Gull
Larus argentatus
Great Black-backed Gull
Larus marinus
Glaucous Gull
Larus hyperboreus
Iceland Gull
Larus glaucoides
Lesser Black-backed Gull
Larus fuscus
Black-legged Kittiwake
Rissa tridactyla
Common Gull
Larus canus
Ring-billed Gull
Larus delawarensis
Little Gull
Hydrocoloeus minutus
Sabine's Gull
Xema sabini
📅 Monthly Probability
Fewer than 5 records of Bonaparte's Gull at Vatnajokull National Park — not enough to chart months honestly.
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there