March 18, 2010 at 10:44 pm
Many bird populations migrate long distances along a flyway. In contrast, birds that are non-migratory are known as resident birds. Interpolated geolocation tracks of 11 Arctic terns tracked from breeding colonies in Greenland (n = 10 birds) and Iceland (n = 1 bird). Migration is marked by its annual seasonality. In contrast, birds that are non-migratory are said to be resident or sedentary. At northern latitudes, most of the breeding bird species are migratory and migrate south for some period of the year. Each bird has a specific sense of direction which determines its migration pattern.
Migratory Bird Patterns
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