Altitudinal migration is typical on mountains around the world, including during the Himalayas and the Andes.[70] Dusky grouse in Colorado migrate below a kilometer from their summertime grounds to winter web-sites which may be greater or reduce by about 400 m in altitude compared to summer time sites.[71] Swallows frequently https://captainbookmark.com/story20303780/the-2-minute-rule-for-petsky