| |
| | Birds, Familiar: Chimney Swift, Life Histories of North American Birds, A.C. Bent |
 | | Although swifts, during their spring migration, often collect, before going to roost, in flocks of considerable numbers, they are less conspicuous at this season than during their impressive gatherings in the autumn. |
 | | From the fact that swifts in the courting season so often fly three together when engaged in their pursuits--in the initial part at least, for at the culmination the pair find themselves alone--a surmise has arisen that one male and two females make up the trio and that the swift is polygamous. |
 | | Enemies.--Because the swift spends a large part of its life moving rapidly through the air, almost never coming to rest except at its nest or when roosting in a chimney or a hollow tree, it is practically out of reach of any mammal that otherwise might prey upon it. |
| home.bluemarble.net /~pqn/ch11-20/chswift.html (8856 words) |
|