Animal Behavior: An Evolutionary Approach |
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Page 254
... territory owner and gain a chance to encounter feeding females , some of whom will be sexually receptive . Why Do Nonterritorial Individuals Accept Their Status ? The ground rule for a territorial species is that individuals that fail ...
... territory owner and gain a chance to encounter feeding females , some of whom will be sexually receptive . Why Do Nonterritorial Individuals Accept Their Status ? The ground rule for a territorial species is that individuals that fail ...
Page 267
... Territory Undefended Site 1 234 2 4 4 2.7 2 Time Spent Resting instead of Foraging ( hours ) 8 4 = 4 4 - 2.7 2-2 = 1.3 = 0 Calories Saveda 2400 780 0 Source : Gill and Wolf [ 257 ] . " For the bird that owns a particular territory , the ...
... Territory Undefended Site 1 234 2 4 4 2.7 2 Time Spent Resting instead of Foraging ( hours ) 8 4 = 4 4 - 2.7 2-2 = 1.3 = 0 Calories Saveda 2400 780 0 Source : Gill and Wolf [ 257 ] . " For the bird that owns a particular territory , the ...
Page 268
... territorial bird will remain at its site and vigorously defend it against outsiders . But there are two puzzling and unpredicted aspects of their behavior . First , residents sometimes tolerate another bird on their territory for a time ...
... territorial bird will remain at its site and vigorously defend it against outsiders . But there are two puzzling and unpredicted aspects of their behavior . First , residents sometimes tolerate another bird on their territory for a time ...
Contents
NATURAL SELECTION | 5 |
Alternative Hypotheses | 11 |
Experimental Tests of Evolutionary Predictions | 17 |
Copyright | |
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ability activity adaptive adult allele animals anole ants aphids attack auditory bank swallows bees Behavioral Ecology benefits biological birds black-headed gull brain breeding burrow butterfly Chapter colony Color copulate courtship cues cycle damselfly defense detect developmental dominant ecological effects eggs energy environment environmental evolution evolutionary evolved example experience feeding female's fertilize Figure flies foraging gametes ganglion genes genotype gulls habitat honeybee hormonal human hypothesis inclusive fitness individuals infanticide insects interactions kin selection kittiwake larvae living male's males and females mate mechanisms moth mutant nervous system nest neural neurons offspring parental pattern Photograph physiological polygyny population potential predators prediction prey produce progeny rats receptive receptors relatively reproductive success response result selection sensory sexual sexual reproduction sexual selection signals slug snakes social Sociobiology song sounds species sperm stimulation survival territory testosterone toad traits visual wasp white-crowned sparrow wings workers young