Bonaparte's gull
| Bonaparte's gull | |
|---|---|
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| Adult breeding | |
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| Adult non-breeding | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Charadriiformes |
| Family: | Laridae |
| Genus: | Chroicocephalus |
| Species: | C. philadelphia |
| Binomial name | |
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Chroicocephalus philadelphia (Ord, 1815) |
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| Synonyms | |
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Larus philadelphia |
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Larus philadelphia
Bonaparte's gull (Chroicocephalus philadelphia) is a small gull found mainly in North America.
When George Ord first described Bonaparte's gull in 1815, he gave it the scientific name Sterna philadelphia, assigning it to the genus now used for medium-sized terns. Most later taxonomists assigned it to the genus Larus, a longtime catch-all for most of the gull species. However, in 1858, George Newbold Lawrence moved the species to the genus Chroicocephalus, and some taxonomists followed suit. Recent molecular DNA studies have shown that this species fits neatly into a clade with other "masked gulls", and that it and the slender-billed gull are each other's closest relatives and are basal to the rest of that grouping. Based on these studies, the American Ornithologists' Union, which had previously assigned the species to the genus Larus, moved it into its current genus in 2008. It is monotypic across its range.
The species is named for Charles Lucien Bonaparte, a French ornithologist (and nephew to the former French emperor Napoleon Bonaparte) who spent eight years in America, contributing to the understanding of the taxonomy and nomenclature of birds there and elsewhere. Its genus name, Chroicocephalus, is a combination of the Greek words chroikos, an adjective form of chroa meaning "colour", and kephalē meaning "head". This refers to the dark heads that gulls of this genus show during the breeding season. The specific epithet philadelphia is a Latinized adjective meaning "from Philadelphia", a reference to the location from which the type specimen was collected.
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