| Bonaparte's gull | |
|---|---|
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| Adult with breeding plumage | |
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| Adult with non-breeding plumage | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Charadriiformes |
| Family: | Laridae |
| Genus: | Chroicocephalus |
| Species: | C. philadelphia
|
| Binomial name | |
| Chroicocephalus philadelphia (Ord, 1815)
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| Synonyms | |
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Bonaparte's gull (Chroicocephalus philadelphia) is a member of the gull family Laridae 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.
- ^ "Bonaparte's Gull: Larus philadelphia". IUCN Red List of Threatened Species. 2018: e.T22694432A132550875. 2018. doi:10.2305/IUCN.UK.2018-2.RLTS.T22694432A132550875.en.
- ^ [Ord, George] (1815). "Zoology of North America". A New Geographical, Historical, and Commercial Grammar; and Present State of the Several Kingdoms of the World. By Guthrie, W.; [Ferguson, J.]; [Knox, J.]; [Ord, G.] Vol. 2 (Second American improved ed.). Philadelphia: Johnson & Warner. p. 319.