Bonaparte's Gull
Chroicocephalus philadelphia (Ord, 1815)
ON
BONGU
5810
Family: Charadriiformes > Laridae
![Bonapartes Gull, Toby Carter Bonapartes Gull, Toby Carter](https://www.bto.org/sites/default/files/birdfacts/00231_Bonapartes%20Gull_Toby%20Carter.jpg)
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.
Identification
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Population size and trends and patterns of distribution based on BTO surveys and atlases with data collected by BTO volunteers.
DISTRIBUTION
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 |
DISTRIBUTION CHANGE
This vagrant is too rarely reported to map distribution change.
SEASONALITY
Bonaparte's Gull is a rare vagrant which has been recorded throughout the year.
Movement
Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.
RINGING RECOVERIES
View a summary of recoveries in the Online Ringing Report.
Biology
Lifecycle and body size information about Bonaparte's Gull, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.
PRODUCTIVITY & NESTING
Sample sizes are too small to report Productivity and Nesting statistics for this species.
CODES & CLASSIFICATION
Field Codes ![]() |
2-letter: ON | 5-letter code: BONGU | Euring: 5810 |
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Links to more information from ConservationEvidence.com
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