CUCKOOS COWBIRDS AND OTHER CHEATS PDF

Buy Cuckoos, Cowbirds and Other Cheats () (): NHBS – NB Davies, T & AD Poyser Ltd (A & C Black). In this fascinating new book, Nick Davies describes the natural histories of these brood parasites and examines many of the exciting questions. Request PDF on ResearchGate | On Jan 1, , David F. Sherry and others published Cuckoos, Cowbirds and Other Cheats.

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John Murray; London, UK: Burial of cowbird eggs by parasitised yellow warblers: He has had a lifelong interest in British wildlife, especially birds, and has broadcast and written extensively on the subject.

Account Options Sign in. Parental care in cowbirfs finches: Age specific variation on reproductive performance of birds. M, Fuisz T, Davies N.

Cuckoos, Cowbirds and Other Cheats | NHBS Academic & Professional Books

And cheatx are so few species obliged only to lay eggs in host nests? Parentage without parental care: Scheme showing the relationship between a host trait and its fitness value for both predation and parasitism risk. On current evidence, female gentes of Common Cuckoos represent alternative reproductive strategies, i. Life history of magpie populations sympatric or allopatric with the brood-parasitic great spotted cuckoo.

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Indeed, Soler et al. How is this arms race conducted?

Under these scenarios, the cuckoo gens that parasitized a particular host species either becomes extinct or successfully switches the host species.

This is easier said than done, given that one can hardly turn an acceptor into a rejector and hence measure the lifetime cobirds of egg rejection. Go to Conservation Land Management.

Desertion of nests parasitised by cowbirds: In contrast, chicks of a few cuckoo species, cowbirds and parasitic finches are commonly raised together with the host cwbirds. Proximity of trees facilitates parasitism by cuckoos Cuculus canorus on rufous warblers Cercotrichas galactotes. Despite being intensively studied, the parasite—host system provides ample opportunities to test new predictions from both coevolutionary theory as well as life-history theory in general.

Received Jan 30; Accepted Apr For example, Hauber used a comparative approach to document that hosts of Brown-headed Cowbirds have reduced clutch sizes, which is exactly what general life-history theory predicts under increased ocwbirds mortality in the host species, and Soler et al.

Cuckoos, cowbirds and hosts: adaptations, trade-offs and constraints

Evolutionary outcomes of parasite—host interactions include continued exploitation of naive hosts, coexistence between parasite and chaets with dynamic behaviour of the host and fluctuating levels of brood parasitism, and finally host switch by parasites, induced by host defences that prevent continued brood parasitism. Interestingly, despite subtle adjustments of begging behaviour, cheatts chick mimicry is essentially absent in brood parasites with the exception of the Screaming Cowbird Molothrus rufoaxillaris and the parasitic finches Davies ; Payne b.

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Common cuckoos Cuculus canorus lay eggs with larger yolk but not more testosterone than their great reed warbler Acrocephalus arundinaceus hosts.

Eggshell strength in cuckoos and cowbirds. Read, highlight, and take notes, across web, tablet, and phone. If parasite—host systems represent the coevolutionary process, these situations need an explanation.

Cuckoos, cowbirds and hosts: adaptations, trade-offs and constraints

Change in host rejection behaviour mediated by the predatory behaviour of fuckoos brood parasite. Are blackcaps current winners in the evolutionary struggle against the common cuckoo?

Egg mimicry by cuckoos, Cuculus canorusin relation to discrimination by hosts. Costs to host defence and the persistence of parasitic cuckoos. Under strong selection pressure for egg acceptance, this trait would be expected to spread to fixation and no genetic variation should be detectable, even if evolutionary equilibrium cowbirde.

The key counter-adaptation of hosts before a parasitic egg is laid is aggression towards the parasitic female Moksnes et al. Penguin Press; Harmondsworth, UK: