ML137334

媒体文件注释

NOTES: 20 Ivory Gulls feeding at carcass of Phoca hispida, left temporarily on sea ice by hunter. Birds gather around carcass while the most agressive ones feed and defend. Glaucous Gulls at distance calling; only boldest approach carcass. 0:00 Ivory Gull squeals. 0:10 Glaucous Gulls in background. 0:25 Ivory Gull tern-like calls and swoop at conspecifics at carcass. 3:00 Ivory Gulls threat calls, swooping flight. 6:35 Glaucous Gulls flew in. 7:25 Glaucous Gull long call. 9:35 Glaucous Gulls in background. 12:00 Ivory Gull Chorus. Glaucous Gulls in background. 13:00 Fight between Ivory Gulls; Glaucous Gulls in background. 19:20 Ivory Gull - single bird at carcass; walking on ice. 20:30 Glaucous Gull chorus in background. 20:30 Ivory Gull feeding on carcass - sounds made by pulling and shaking pieces of blubber. 22:00 ends. (LNS Note: taken verbatum from hand-written descriptive data, times may not match or match only approximately those on digitized copy.). Habitat: Tundra, Arctic Tundra.

额外物种

• Glaucous Gull Larus hyperboreus