Fulmar

Fulmar

Fulmarus glacialis

Introduction

This robust-looking seabird breeds around the coasts of Scotland, Ireland, Wales, and the south-west and north-east of England, but may be encountered more widely around our shores outside of the breeding season.

Fulmar has a remarkable breeding history, its North Atlantic population originally restricted to St Kilda and an island off the coast of Iceland. The last 250 years have seen a remarkable expansion in Fulmar populations and the colonisation of suitable sites around Iceland, Britain, Ireland, northwest France and sections of the Norwegian coast. The reasons for the expansion are unclear.

Young Fulmars spend their first four or five years at sea, before visiting the colonies at which they will then breed. Even then, they will not breed themselves until they are nine years of age and reach sexual maturity.

Key Stats

Status
Common
Common
Weight
Weight
772.4g
BTO Records
BTO Records
190k records
Population and distribution stats for:

Identification

Curated resources to aid in the identification of Fulmar

Songs and Calls

Listen to example recordings of the main vocalisations of Fulmar, provided by xeno-canto contributors.

Call:

Movement

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

Britain & Ireland movement

View a summary of recoveries in the Online Ringing Report

Foreign locations of birds ringed or recovered in Britain & Ireland

Dots show the foreign destinations of birds ringed in Britain & Ireland, and the origins of birds ringed overseas that were subsequently recaptured, resighted or found dead in Britain & Ireland. Dot colours indicate the time of year that the species was present at the location.

  • Winter (Nov-Feb)
  • Spring (Mar-Apr)
  • Summer (May-Jul)
  • Autumn (Aug-Oct)
Foreign locations of birds ringed or recovered in Britain & Ireland

European movements

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 Fulmar, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.

Productivity and Nesting

Nesting timing

Typical (exceptional) number of broods
1

Egg measurements

Typical length x width
74x50 mm
Mass (% shell)
98g (8%)

Clutch Size

Typical number
1 eggs
Observed minimum and maximum
1-2 eggs

Incubation

Incubation by
Male + Female
Typical duration
52-53 days

Fledging

Type of chick
Typical duration
46-51 days

Survival and Longevity

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.

View number ringed each year in the Online Ringing Report.

Lifespan

Typical life expectancy of bird reaching breeding age
44 years with breeding typically at 9 years
Maximum age from a ringed bird
41 years, 11 months, 17 days (set in 2019)

Survival of adults

All adults
0.972

Biometrics

Wing length and body weights are from live birds (source).

Wing length

Average ±1 std deviation; range and sample size in brackets.
All adults
331.7±13.5 mm
(312-350 mm, N=351)
Female
330.1±7.9 mm
(319-342 mm, N=37)
Male
339.5±10.5 mm
(320-357 mm, N=72)

Body weight

Average ±1 std deviation; 5th and 95th percentiles and sample size in brackets.
All adults
772.4±126.2 g
(595-970 g, N=197)

Ring Size

F

Classification, names and codes

Taxonomy, names and species codes for Fulmar

Classification and Codes

  • Order: Procellariiformes
  • Family: Procellariidae
  • Scientific name: Fulmarus glacialis
  • Authority: Linnaeus, 1761
  • BTO 2-letter code: F.
  • BTO 5-letter code: FULMA
  • Euring code number: 220

Alternate species names

  • Catalan: fulmar boreal
  • Czech: burnák lední
  • Danish: Mallemuk
  • Dutch: Noordse Stormvogel
  • Estonian: jää-tormilind
  • Finnish: myrskylintu
  • French: Fulmar boréal
  • Gaelic: Eun-crom
  • German: Eissturmvogel
  • Hungarian: északi sirályhojsza
  • Icelandic: Fýll
  • Irish: Fulmaire
  • Italian: Fulmaro
  • Latvian: kilde
  • Lithuanian: šiaurinis fulmaras
  • Norwegian: Havhest
  • Polish: fulmar (zwyczajny)
  • Portuguese: pombalete
  • Slovak: fulmar ladový
  • Slovenian: ledni viharnik
  • Spanish: Fulmar boreal
  • Swedish: stormfågel
  • Welsh: Aderyn Drycin y Graig

Research

Interpretation and scientific publications about Fulmar from BTO scientists.

Causes of Change and Solutions

Causes of change

The reasons behind changes in the Fulmar population are uncertain, but changes in the supply of food by man, e.g. discards from fishing vessels, have been suggested as a possible driver of the increases in the population until the late 1980s (JNCC 2022) and similarly the more recent slight decline may have been influenced by a reduction in the amount of discards (Bicknell et al. 2013). Data from two colonies (one in Scotland and one in Ireland) suggest that there may have been a decline in survival over the period 1974 to 2009 (Cordes et al. 2015); the reasons for this are unclear but this could be a potential consequence from reductions in prey populations and bycatch from fisheries .

Publications (5)

The status of the UK’s breeding seabirds

Author: Stanbury, A.J., Burns, F., Aebischer, N.J., Baker, H., Balmer, D., Brown, A.F., Dunn, T., Lindley, P., Murphy, M., Noble, D.G., Owens, R. & Quinn, L.

Published: 2024

Five seabird species are added to the Birds of Conservation Concern Red List in this addendum to the 2021 update, bringing the total number of Red-listed seabird species to 10, up from six since ...

29.09.24

Papers

View on journal website

Seabird Population Trends and Causes of Change: 1986–2023

Author: Harris, S.J., Baker, H., Balmer, D.E., Bolton, M., Burton, N.H.K., Caulfield, E., Clarke, J.A.E., Dunn, T.E., Evans, T.J., Hereward, H.R.F., Humphreys, E.M., Money, S. and O’Hanlon, N.J.

Published: 2024

This report presents the latest seabird population trends in breeding abundance and productivity using data from the Seabird Monitoring Programme (SMP).The report documents changes in the abundance ...

21.11.24

Reports SMP Report

Read the report

Northern Ireland Seabird Report 2023

Author: Booth, K.J. & El Haddad, H.

Published: 2024

The report includes detailed information about the population trends and breeding success of seabirds in Northern Ireland, over the 2023 breeding season. Notably, Fulmar and Kittiwake populations are ...

15.04.24

Reports Northern Ireland Seabird Report

Download file

More Evidence

More evidence from Conservation Evidence.com

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