Chroicocephalus philadelphia (Ord, 1815)
Family: Charadriiformes > Laridae
The only gull to nest regularly in trees, this rare but annual visitor from North America looks like a small Black-headed Gull
The name honours Charles Lucien Bonaparte, who made important contributions to American ornithology.
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Status and Trends
Population size and trends and patterns of distribution based on BTO surveys and atlases with data collected by BTO volunteers.
This species is a rare vagrant and was recorded during Bird Atlas 2007–11 as shown on the map.
Occupied 10-km squares in UK
|No. occupied in winter||7|
|% occupied in winter||0.2|
This vagrant is too rarely reported to map distribution change.
Bonaparte's Gull is a rare vagrant which has been recorded throughout the year.
Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.
Lifecycle and body size information about Bonaparte's Gull, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.
Sample sizes are too small to report Productivity and Nesting statistics for this species.
|Field Codes||2-letter: ON | 5-letter code: BONGU | Euring: 5810|
For information in another language (where available) click on a linked name
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