Larus heermanni, Heermann's gull
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Larus heermanni   Cassin, 1852

Heermann's gull
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Classification / Names Populärnamn | synonymer | CoL | ITIS | WoRMS

Aves | Charadriiformes | Laridae

Environment: milieu / climate zone / djupintervall / distribution range Ekologi

.  Temperate

Distribution Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar

Eastern Pacific and Western Atlantic.

Length at first maturity / Size / Weight / Age

Könsmognad: Lm ?  range ? - ? cm Max length : 53.0 cm TL hane/ej könsbestämd; (Ref. 8812); publicerad maxvikt: 640.00 g (Ref. 356)

Short description Morfologi

Culmen: 4.37 cm; wing: 34.7 cm.

Biologi     Ordlista (t.ex. epibenthic)

Total Length: 46 to 53 cm; Wingspan: 117 to 124 cm (Ref. 8812). Coastal; <50km (Ref. 356). Use various behavioral methods to thermoregulate such as neck extension, panting and gaping, elevation of feathers and/or scapulars, feather fluffing, beak tucking under scapular, wing drooping, tail tilting, etc. Egg neglect, while parents forage, was observed; eggs left at night run the risk of chilling causing the embryo's heart to stop beating (Ref. 87784). Displays surface-plunging and dipping (Ref. 356).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae

Main reference referenser | Koordinator | Medarbetare

SAUP Database 2006 SAUP Database. www.seaaroundus.org. (Ref. 356)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Near Threatened (NT) (D2); Date assessed: 28 August 2020

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Ytterligare information

Trophic Ecology
Food items (preys)
Födosammansättning
Födointag
Predatorer
Ekologi
Population dynamics
Tillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundans
Life cycle
Reproduktion
Könsmognad
Fecundity
Lek
Eggs
Egg development
Larvae
Distribution
Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Physiology
Syreförbrukning
Human Related
Stamps, coins, misc.
Outreach
referenser

Internet-källor

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, sök) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 9.1 - 12.1, mean 10.3 (based on 156 cells).
Fishing Vulnerability (Ref. 71543): Moderate vulnerability (41 of 100).
Price category (Ref. 80766): Unknown.