Interspecific aggression in waterfowl (Anatidae) is relatively common (McKinney 1965; Kear 1972; Savard 1982, 1984), but interactions leading to mortality of one of the combatants are rarely-observed in the wild. A recent debate (Livezey and Humphrey 1985a, 1985b; Nuechterlein and Storer 1985a, 1985b; Murray 1985) has centered on the proximate and ultimate causes of interspecific territoriality and killing in steamer-ducks (Tachyeres spp.), a group of large-bodies antids. We report here aggressive encounters between Greater White-fronted Geese (Anser albifrons) and Tundra Swans (Cygnus columbianus) during brood rearing on the Yukon-Kuskokwim Delta, Alaska, which on two occasions resulted in the death of a White-fronted Goose gosling.
Additional publication details
|Publication Subtype||Journal Article|
|Title||Aggressive encounters between tundra swans and greater white-fronted geese during brood rearing|
|Series title||The Condor|
|Publisher||Cooper Ornithological Society|
|Contributing office(s)||Alaska Science Center, Alaska Science Center Biology WTEB, Idaho Cooperative Fish and Wildlife Research Unit|
|Other Geospatial||Yukon-Kuskokwim Delta|