Goose

This term also gave Lithuanian: žąsìs, Irish: gé (goose, from Old Irish géiss), Hindi: कलहंस, Latin: anser, Spanish and Portuguese: ganso, Ancient Greek: χήν (khēn), Albanian: gatë (swans), Finnish: hanhi, Avestan zāō, Polish: gęś, Romanian: gâscă / gânsac, Ukrainian: гуска / гусак (huska / husak), Russian: гусыня / гусь (gusyna / gus), Czech: husa, and Persian: غاز (ghāz).

The aptly named Anser atavus (meaning "progenitor goose") from some 12 million years ago had even more plesiomorphies in common with swans.

Garganornis ballmanni from Late Miocene (~ 6–9 Ma) of Gargano region of central Italy, stood one and a half meters tall and weighed about 22 kilograms.

[7] Most goose species are migratory, though populations of Canada geese living near human developments may remain in a locality year-round.

[8] These 'resident' geese, found primarily in the eastern United States, may migrate only short distances, or not at all, if they have adequate food supply and access to open water.

[8] Migratory geese may use several environmental cues in timing the beginning of their migration, including temperature, predation threat, and food availability.

[13][14] Using great white pelicans as a model species, researchers showed that flying in a V formation increased the aerodynamics of trailing birds, thus requiring fewer wing flaps to stay aloft and lowering individuals' heartrates.