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Index of Subjects Hi Heather, The short answer is yes, birds migrate at different altitudes. Altitudes will vary depending on many, many factors such as the continent(s) that migration is taking place on, what the topography is that has to be migrated over, which family of birds is being looked at, whether birds are gaining altitude, cruising at altitude or starting to descend, what the weather is that is being flown through, etc. I believe the altitude 'champion' is considered to be the Bar-headed Goose that flys over the Himalayas, so we're talking in the neighbourhood of 9,000+ meters (~30,000 feet). In North America, most of the migration takes place around the 3,000 meter level (~10,000 feet) but some families of birds, such as hawks and shorebirds will usually be migrating at a higher altitude and some, such as swallows, are usually found migrating at lower altitudes. All the best, Lance =========================== Lance Laviolette Glen Robertson, Ontario lance.laviolette@lmco.com =========================== > -----Original Message----- > From: naturens-owner@chebucto.ns.ca > [mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Heather Drope > Sent: Wednesday, April 23, 2008 12:34 PM > To: naturens@chebucto.ns.ca > Subject: [NatureNS] migration altitude question > > The son of a friend of mine was flying, not solo yet, and he > and the instructor found themselves headed into a flock of > white birds at an altitude of 3,000 feet. They dove to try > and keep the damage to minimum, which they did. They survived. > The question is - do different species of birds fly at > different altitudes when migrating? Is it always the same or > what determines it? > The next burning question is - do birds migrate at night in > huge flocks? > Hope someone can answer these questions... Heather D. >
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