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Constraints on egg discrimination and cuckoo-host co-evolution
To understand the co-existence of rejection and acceptance of cuckoo eggs within a host population, the mechanism of egg discrimination and the cost-benefit balance of rejection behaviour wereExpand
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Learning to recognize nestlings is maladaptive for cuckoo Cuculus canorus hosts
THE picture of a tiny passerine host feeding a huge cuckoo nestling challenges evolutionary biologists who explain animal behaviour as adaptive1–4. Cuckoo eggs sometimes resemble the eggs of theExpand
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Differences in begging behaviour between barn swallow,Hirundo rustica, nestlings
  • A. Lotem
  • Medicine, Biology
  • Animal Behaviour
  • 1 April 1998
Recent models of parent-offspring communication suggest that nestling begging reliably reflects food requirements, and therefore should increase with nestling need. Need may be affected by short-termExpand
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Helping opportunities and space segregation in cooperatively breeding cichlids
Studies of cooperative breeding have largely ignored the role of conflict among helpers and how it shapes group dynamics and helping behavior. In the present study, performing laboratory experimentsExpand
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From reciprocity to unconditional altruism through signalling benefits
Cooperation among genetically unrelated individuals is commonly explained by the potential for future reciprocity or by the risk of being punished by group members. However, unconditional altruism isExpand
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The sexual signals of the East-Mediterranean barn swallow: a different swallow tale
The differential functions of distinct morphological traits as sexual signals among closely related populations are associated with a potential role of sexual selection in population divergence andExpand
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Low Variation in the Polymorphic Clock Gene Poly-Q Region Despite Population Genetic Structure across Barn Swallow (Hirundo rustica) Populations
Recent studies of several species have reported a latitudinal cline in the circadian clock gene, Clock, which influences rhythms in both physiology and behavior. Latitudinal variation in this geneExpand
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Parental effort and response to nestling begging in the house sparrow: repeatability, heritability and parent–offspring co‐evolution
  • R. Dor, A. Lotem
  • Biology, Medicine
  • Journal of evolutionary biology
  • 1 August 2010
Parental effort has a direct impact on individual fitness. Theoretical models exploring how parental effort evolves to cope with offspring demand and sexual conflicts may differ in the assumptionsExpand
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Begging in the absence of parents: a "quick on the trigger" strategy to minimize costly misses
Nestling begging in the absence of parents may reflect "false alarms" due to cognitive constraints or signaling activity toward nest mates (sibling negotiation). According to signal detection theory,Expand
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