Bar-headed geese, Anser indicus, breeds in Central Asia, often in colonies of thousands near mountain lakes.
bar headed geese - fly over Mount Everest
The Bar-Headed Goose has been seen flying around Mount Everest at up to thirty thousand feet, that is higher than the summit.
They migrate to Finland before the summer and migrate away from Finland after the summer.
geese
siberia
The record is held by migrating bar-headed geese - they have been seen from a plane crossing the Himalayas, over Everest.
For the food supply.
katrina
under the wings of geese
Pretty well all species of ducks and geese (like Mallards, canvasbacks, pintails, eiders, grebes, Canada geese, snow geese, etc.) migrate south in the fall and fly north in the spring.
Once every year they will migrate to warmer climates during the winter.