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Handicap principle
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The handicap principle is a hypothesis proposed by the Israeli biologist Amotz Zahavi in 1975. It is meant to explain how "signal selection" during mate choice may lead to "honest" or reliable signall
The peacock tail in flight, a classic example of what Amotz Zahavi proposed was a handicapped signal of male quality
The peacock tail in flight, a classic example of what Amotz Zahavi proposed was a handicapped signal of male quality
Luxury cars and other "Veblen goods" may be an example of the handicap principle in humans.
Luxury cars and other "Veblen goods" may be an example of the handicap principle in humans.
Impala stotting, a behaviour that may serve as a pursuit deterrence signal to predators
Impala stotting, a behaviour that may serve as a pursuit deterrence signal to predators
Signalling theory
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Within evolutionary biology, signalling theory is a body of theoretical work examining communication between individuals, both within species and across species. The central question is how organisms
Handicap principle
…The handicap principle is a hypothesis proposed by the Israeli biologist Amotz Zahavi in 1975. It is meant to explain how "signal selection" during mate choice may lead to "honest" or reliable signalling between male and female animals which have an obvious motivation to bluff or deceive…
By stotting (also called pronking), a springbok (Antidorcas marsupialis) signals honestly to predators that it is young, fit, and not worth chasing.
By stotting (also called pronking), a springbok (Antidorcas marsupialis) signals honestly to predators that it is young, fit, and not worth chasing.
Eurasian jay, Garrulus glandarius, gives honest signals—loud alarm calls—from its tree perch when it sees a predator.
Eurasian jay, Garrulus glandarius, gives honest signals—loud alarm calls—from its tree perch when it sees a predator.
The yellow-banded poison dart frog, Dendrobates leucomelas, gives an honest signal of its toxicity to warn off predators and reduce the frog's risk of
The yellow-banded poison dart frog, Dendrobates leucomelas, gives an honest signal of its toxicity to warn off predators and reduce the frog's risk of injury.
Male fiddler crab, in the family Ocypodidae, signals with its enlarged fighting claw, but weak regrown claws may be dishonest signals.
Male fiddler crab, in the family Ocypodidae, signals with its enlarged fighting claw, but weak regrown claws may be dishonest signals.