The males and the females of these small birds differ in coloration. Adult males have bright turquoise-blue plumage, while adult females have duller blue wings and tails, grey breasts, grey crowns, throats, and backs. However, in fresh fall plumage, the female's throat and breast are tinged with red-orange contrasting with white tail underparts. Mountain bluebirds feed mainly on insects; however, during cold winter months, they eat mostly ...
berries and fruit seeds. When feeding bluebirds hover over the ground and fly down to catch insects which takes up to 8 times the energy of sitting on a perch and waiting.
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