Bonaparte's gull
Chroicocephalus philadelphia (Ord, 1815)
Status not recordedbirds
The bonaparte's gull (Chroicocephalus philadelphia) is a species in the family Laridae, order Charadriiformes. Recorded adults weigh 175 g to 210.7 g.

Quick facts about the bonaparte's gull
- Weight
- 175 g – 210.7 gsrc for Weight
- Length
- Not recorded
- Wingspan
- 78 cm – 90 cmsrc for Wingspan
- Lifespan
- Not recorded
- Diet
- Omnivoresrc for Diet
- Main food
- Not recorded
- Habitat
- wetlandsrc for Habitat
- Egg incubation
- 23.5 dayssrc for Egg incubation
- Young per litter or clutch
- 3src for Young per litter or clutch
- Litters or clutches a year
- 1src for Litters or clutches a year
- Lifestyle
- Aerialsrc for Lifestyle
- Migration
- Partialsrc for Migration
- Conservation status
- Not recorded
- Countries on record
- Not recorded
How big is the bonaparte's gull?
Photos of the bonaparte's gull
Only freely licensed photos are shown. Each carries its creator and licence.


Where does the bonaparte's gull live?
Not recorded
What is the 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.
From the Wikipedia article “Bonaparte's gull” (en.wikipedia.org/w/index.php?title=Bonaparte%27s_gull&oldid=1373877183), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
What does the bonaparte's gull sound like?
Is the bonaparte's gull endangered?
No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.
How is the bonaparte's gull classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderCharadriiformes
- familyLaridae
- genusChroicocephalus
- SpeciesChroicocephalus philadelphia (Ord, 1815)
Synonyms Chroicocephala philadelphia, Larus bonapartii, Larus marginatus, Larus melanorhinchus, Larus philadelphia, Sterna philadelphia
Other names and names in other languages (56)
- Bonapartian gullEnglish
- نورس بونابرتArabic
- نورس فيلادلفياArabic
- Бонапартова чайкаBulgarian
- Gouelanig BonaparteBreton
- gavina de BonaparteCatalan
- Бонапарт колшӹреMari
- racek BonapartůvCzech
- Gwylan BonaparteWelsh
- Gwylanod BonaparteWelsh
- BonapartemågeDanish
- BonapartemöweGerman
- kanada mevoEsperanto
- Bonaparta mevoEsperanto
- Gaviota de BonaparteSpanish
- Gaviota PipizcanSpanish
- kuusekajakasEstonian
- kuusilokkiFinnish
- BonapartenlokkiFinnish
- hattarmásiFaroese
- Mouette de BonaparteFrench
- Sléibhín BonaparteIrish
- Faoileán BhonaparteIrish
- Foillan BonaparteScottish Gaelic
- Gaivota de BonaparteGalician
- Mòv janm wòzHaitian Creole
- שחף אמריקאיHebrew
- שחף בונפרטהHebrew
- šumski galebCroatian
- Bonaparte-sirályHungarian
- TrjámáfurIcelandic
- Gabbiano di BonaparteItalian
- ボナパルトカモメJapanese
- Bonaparto kirasLithuanian
- melnknābja ķīrisLatvian
- Kleine KokmeeuwDutch
- kanadahettemåseNorwegian Nynorsk
- kanadahettemåkeNorwegian
- Kahela BonapartePapiamento
- Meuwchi BonapartePapiamento
- mewa kanadyjskaPolish
- guincho-americanoPortuguese
- Gaivota-de-bonapartePortuguese
- garrincho-americanoPortuguese
- BonapartebáiskiNorthern Sami
- stuora gahpirbáiskiNorthern Sami
- čajka čiernozobáSlovak
- ameriški rečni galebSlovenian
- Bonapartin galebSerbian
- trädmåsSwedish
- svartnäbbad skrattmåsSwedish
- Küçük Karabaş MartıTurkish
- мартин канадськийUkrainian
- 伯氏鸥Chinese
- 博氏鸥Chinese
- 小黑頭鷗Chinese
Relatives of the bonaparte's gull
Other species in the same genus Chroicocephalus.

Black-headed gull
Chroicocephalus ridibundus

Slender-billed gull
Chroicocephalus genei

Brown-headed gull
Chroicocephalus brunnicephalus

Silver gull
Chroicocephalus novaehollandiae

Andean gull
Chroicocephalus serranus

Grey-headed gull
Chroicocephalus cirrocephalus
CompareBonaparte's gull vs Black-headed gullBonaparte's gull vs Slender-billed gullBonaparte's gull vs Brown-headed gullBonaparte's gull vs Silver gull
Common questions
Answered only where our data holds the answer.
How big is the bonaparte's gull?
An adult bonaparte's gull weighs 175 g – 210.7 g and has a wingspan of 78 cm – 90 cm, according to values recorded on Wikidata.
What kind of animal is the bonaparte's gull?
The bonaparte's gull (Chroicocephalus philadelphia) belongs to the family Laridae in the order Charadriiformes.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - AVONET: morphological, ecological and geographical data for all birds · CC BY 4.0 · v7
Tobias, J.A. et al. (2022) AVONET: morphological, ecological and geographical data for all birds. Ecology Letters 25: 581–597. https://doi.org/10.1111/ele.13898. Data: https://doi.org/10.6084/m9.figshare.16586228.v7 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Bonaparte's gull (Chroicocephalus philadelphia). Retrieved from https://creaturedata.com/animals/bonapartes-gull
“Bonaparte's gull (Chroicocephalus philadelphia).” CreatureData, 2026, https://creaturedata.com/animals/bonapartes-gull.
@misc{bonapartes_gull_2026,
title = {Bonaparte's gull (Chroicocephalus philadelphia)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/bonapartes-gull},
note = {Data as of 2026-11-11}
}