Slender-billed Gull

Chroicocephalus genei

Introduction

A small gull whose scattered breeding populations extend from the Mediterranean to the Arabian Sea. The Spanish population is increasing and may be the source of the occasional individuals that occur in Britain.

Key Stats

Status

Very rare

Weight

285g

Seasonality

BTO Records

41 records

Population and distribution stats for:

No data

No current data

No current data

No data

No current data

No current data

Status and Trends

Population size, trends and patterns of distribution based on BTO and partnership surveys and atlasses with data collected by BTO volunteers.

Conservation Status

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This species can be found on the following statutory and conservation listings and schedules.

Species of European Conservation Concern

Vulnerable

IUCN Red List of Threatened Species (global)

Least Concern

Schedule 1 Licence required (to disturb)*

Birds Directive Annex 1

* A guide only. Check details with the original legislation, especially those marked with an asterisk. See About Birdfacts for more information.

Population Size

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BOU Category

Source

First Record*

East Sussex, 1960

* First documented occurrence. Most species undoubtedly occurred before this. See About Birdfacts for more information.

Population Change

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Population trends of this scarce species are not routinely monitored.

Distribution

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This vagrant is too rarely reported to map distribution.

European Distribution Map

European Breeding Bird Atlas 2

Distribution Change

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This vagrant is too rarely reported to map distribution change.

Seasonality

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This species has been too rarely reported to BirdTrack during 2011–22 to properly assess seasonality.

Movement

Information about Slender-billed Gull movements and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.

Britain & Ireland movement

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View a summary of recoveries in the Online Ringing Report

European movements

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EuroBirdPortal uses birdwatcher's records, such as those logged in BirdTrack to map the flows of birds as they arrive and depart Europe. See maps for this species here.

The Eurasian-African Migration Atlas shows movements of individual birds ringed or recovered in Europe. See maps for this species here.

Biology

Lifecycle and body size information for Slender-billed Gull, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.

Survival and Longevity

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Survival is shown as the proportion of birds surviving from one year to the next and is derived from bird ringing data. It can also be used to estimate how long birds typically live.

Classification, names and codes

Taxonomy, names and species codes for Slender-billed Gull

Classification and Codes

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Order: Charadriiformes
Family: Laridae
Scientific name: Chroicocephalus genei
Authority: Brème, 1839

BTO 2-letter code: EI
BTO 5-letter code: SLEGU
Euring code number: 5850

Alternate species names

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Catalan: gavina capblanca
Czech: racek tenkozobý
Danish: Tyndnæbbet Måge
Dutch: Dunbekmeeuw
Estonian: salenokk-kajakas
Finnish: kaitanokkalokki
French: Goéland railleur

German: Dünnschnabelmöwe
Hungarian: vékonycsoru sirály
Icelandic: Bleikmáfur
Italian: Gabbiano roseo
Latvian: tievknabja kaija
Lithuanian: laibasnapis kiras
Norwegian: Smalnebbmåke

Polish: mewa cienkodzioba
Portuguese: gaivota-de-bico-fino
Slovak: cajka tenkozobá
Slovenian: zalivski galeb
Spanish: Gaviota picofina
Swedish: långnäbbad mås
Welsh: Gwylan Ylfinfain

More Evidence

More evidence from Conservation Evidence.com

Partners

Birdfacts is based on data collected by volunteers participating in surveys that are organised and funded by BTO, RSPB, Esmée Fairbairn Foundation, JNCC and other partners.

BTO

Esmée Fairbairn Foundation

JNCC

RSPB

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