Great Black-backed Gull, Larus marinus

Recording AV#11341. USA: Delaware; Bombay Hook National Wildlife Refuge (39.26, -75.47)
recorded by Pamela C. Rasmussen

Recording Characterization

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Graphic Sound Analysis
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Sonogram of recording #AV 11341
AVoCet catalog #AV11341
Audio duration (s)36.5
ID confidence and determination100%
seen well calling
Other identified bird speciesLarus argentatus, Branta canadensis, Calidris alpina, Tringa melanoleuca, Anas rubripes
Other noisefoghorn
Sound types presentcalls
Grade of best portiongood
Playback usedno

Individual Characterization

Determined by: plumage
Behaviorwith individual of Larus argentatus, the two swimming very close together, the former calling incessantly, the L. marinus occasionally replying with head held down
Group size1
Same individual as in other cuts in same spatiotemporal group?same two


Recording dateNovember 14, 2010
Time recorded (24h)9:13h
LocationUSA: Delaware; Bombay Hook National Wildlife Refuge (39.26, -75.47)
Coordinates determined by: GeoHack
Elevation (m)0
Determined by: estimate from Google Earth
Weatherclear, calm, pleasant

Additional Information

Recordist namePamela C. Rasmussen
Copyright/permissionscopyright by recordist; freely available with attribution
Recording EquipmentNagra Ares BB+, Sennheiser ME-66/K6