T H E ALPINE S W I F T (Apus melba) is paler and considerably larger than its more wide-spread cousin, the Common Swift [A. apus). It is brown instead of black, and has a white belly separated from a white throat by a brown breast-band (plate 38 upper). On average it is 21.5 cm. long and spans 52-56 cm. (about 20J-22 inches) with outstretched wings, while its weight of around 100 g m . is nearly 2...

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