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Plumage polymorphism in Swainson's Hawk (Buteo Swainsoni): testing a hypothesis of apostatic selection of predators

Technical Report ·
OSTI ID:5934921
;
Breeding success of Swainson's Hawk was studied to test the hypothesis that plumage polymorphism in diurnal raptors increases foraging success by maintaining a frequency dependent unfamiliarity to prey that form search images for predators. Evolutionary implications are discussed. 8 references. (ACR)
Research Organization:
Pacific Northwest Labs., Richland, WA (USA)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5934921
Report Number(s):
PNL-SA-10278; ON: DE85006971
Country of Publication:
United States
Language:
English

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Related Subjects

550100* -- Behavioral Biology
59 BASIC BIOLOGICAL SCIENCES
ANIMALS
BIOLOGICAL EVOLUTION
BIRDS
COLOR
DATA
EXPERIMENTAL DATA
INFORMATION
NUMERICAL DATA
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
PREDATOR-PREY INTERACTIONS
VERTEBRATES