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Description: | As with most birds of prey, the female Gyrfalcon is the larger and heavier bird. A male normally weighs about 2.5 lbs (just over 1kg), whereas the female normally weighs about 3.5 lbs (about 1.6kg). The birds form a pair bond that lasts until one of the pair dies. In bad years when there is less food, Gyrfalcons will not breed. On average they manage to breed in three out of every five years. The female normally incubates the eggs. | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | beyond the North East animals natural world | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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