The Natural Regulation of Animal Numbers'Discussion is based mainly on birds.' |
Contents
INTRODUCTION | 1 |
THE COMPARATIVE STABILITY OF POPULATIONS | 7 |
THE SIGNIFICANCE OF CLUTCHSIZE IN BIRDS | 24 |
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Common terms and phrases
10-year cycle abundant adult American animals Arctic autumn average behaviour birds Blue Tit Bobwhite Bobwhite Quail breeding season broods cause cent Chapter clutch clutch-size Coal Tit colonies Common Swift Crossbill crowding cyclic death-rate declines deer density-dependent disease ducks emigration Europe factors feeding females figures Finland fish fluctuations food shortage food supply further gallinaceous birds habitat Hence higher Horned Owl increase individuals insects invasions irruptions juveniles Kluijver Lack lakes Lapwing large numbers larvae lemmings losses males mammals migration mortality natural nest nestling normally North America numbers occur parasites passerine peak pine population density predators prey proportion Red Grouse region reproductive rate ringed Robin rodents Ruffed Grouse sex ratio shown similar Snowy Owl Song Thrush song-birds Sparrow Sparrowhawk species Spotted Woodpecker Starling starvation studied suggested summer survival Swift Table territories Tinbergen tion usually variations various Varying Hare voles Warbler Waxwing wild birds Willow Warbler woods young