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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Bloomsbury Publishing ChsatsJan 31, – Brood parasitism – pages. The Sensory Ecology of Birds. Age specific variation on reproductive performance of birds. He knew that species closely related to the Common Cuckoo build a nest and raise their own chicks, and until today cowbords degree of variation in parental care within the family of cuckoos is believed to be unmatched by any other bird family Payne a. 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.
As mentioned earlier, there is some evidence for the nesting-exposure hypothesis: How to hatch from an egg of great structural strength. This is easier said than done, given that one can hardly turn an acceptor into a rejector and hence measure the lifetime cost of egg rejection. Coevolution of an avian host and its parasitic cuckoo. No eBook available Amazon.
Conservation and coevolutionary implications of brood parasitism by cowbirds. The authors argue that old females advertise their nest location to invite parasitism and prevent subsequent predation by the cowbird, whereas young females do not show aggressive behaviour because they cannot afford to raise a cowbird chick on top of their own brood, hence they take a gamble.
If parasitized in their first breeding attempt, parents would then reject all their subsequent young Lotem The effect of brood parasitism on the life-history strategy of the host species could especially merit further research.
If a trait affects host fitness similarly under othe predation and parasitism, the resulting selection pressure will be directional abut if predation and parasitism risk are affected in opposite directions, a balancing selection pressure is the result b. He was born on the Lancashire coast, where night- jars and pink-footed geese inspired his passion for birdwatching from an early age. Aggression to dummy cuckoos by potential European cuckoo hosts.
Observations on the natural history of the cuckoo. But the coevolutionary process does not necessarily stop there.
Evolutionary rates and host defenses against avian brood parasitism. Parasites either preferentially use conspicuous host nests or those where the hosts show conspicuous behaviour.
Using a maximum-likelihood approach Pagelit was possible to construct the most likely evolutionary pathway between the presumed ancestral state and that displayed by modern brood parasitic species figure 1. This experimental approach could be viewed as a perturbation analysis of a matrix analysis to test whether the reduction of a matrix element here reproductive success has fitness consequences Caswell Even in cucloos systems where the young cuckoo does not eject, it would be adaptive as imprinting on the first clutch of eggs is adaptive.
Cuckoos, Cowbirds and Other Cheats
All of these puzzles cowbirdw examined in descriptions of the natural history of each of the groups of parasites in turn. Formerly a schoolmaster, he left teaching for a full-time career in wildlife conservation, joining the RSPB staff in as Wales Officer, a post he has held ever since. For the sake of simplicity, these relationships are not considered in models or analyses of costs and benefits of parasite—host coevolution Takasu et al.
Parental care in estrildid finches: Selfish begging by screaming cowbirds, a mimetic brood parasite of the bay-winged cowbird. Recent evidence cowbirdz that begging calls and especially the otther to parental alarm calls can be host specific and differ between gentes of Common Cuckoos Butchart et al.
Soon after hatching, parasitic chicks of most cuckoo species and the honeyguides eliminate competition with host chicks through eviction or killing Davies ; Payne a. A case study of the common cuckoo.
Cuckoos, Cowbirds and Other Cheats – Nicholas B. Davies – Google Books
Soler M, Soler J. On the other hand, some temperate host species have rather low survival rates and these differences should be explained in comparative analyses.
Under which circumstances could it not be the best option to reject a parasitic egg? The model assumes that there are costs of acceptance and also costs of rejecting a parasitic egg. One constraint that parasitic chicks often face is how to hatch from an egg that has a thick or particularly hard shell Payne a. Some hosts of Brown-headed Cowbirds also do not exhibit defences despite high parasitism rates Ortega In these species, adaptations have enabled the parasitic chick to compete successfully with the host chicks.
Parasitic birds and their hosts: Site selection and repeatability in brown-headed cowbird Molothrus ater parasitism of eastern phoebe Sayornis phoebe nests.
Acceptance by the splendid fairy-wren of parasitism by Horsfield’s bronze-cuckoo: Recognition errors and probability of parasitism determine whether reed warblers should accept or reject mimetic eggs.