Multiparasitism and repeated parasitism by the great spotted cuckoo <i>Clamator glandarius</i> on its main host, the magpie <i>Pica pica</i>: effects on reproductive success, nest desertion and nest predation

Great spotted cuckoos improve their reproductive success by damaging magpie host eggs

Adult great spotted cuckoos, Clamator glandariusdamage the eggs of their magpie, Pica picahost without removing or eating them. The number of damaged magpie eggs was recorded in 360 parasitized nests of which 62.2% contained between one and eight damaged magpie eggs. Egg-destroying behaviour may be adaptive if it reduces nestling competition and/or enhances the hatching success of the cuckoo. T...

Nest Predation and Nest Sites

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Effects of Redhead Nest Parasitism on Mallards

The Effect of Magpie Breeding Density and Synchrony on Brood Parasitism by Great Spotted Cuckoos

Nesting density and synchrony by hosts may indirectly serve as a defense mechanism against brood parasites. Here we examine the relationships between spatial and temporal distribution of host nests and the probability of being parasitized. We use as host species the Black-billed Magpie (Pica pica), a species that is parasitized by the Great Spotted Cuckoo (Clamator glandark) in southern Europe....

Nest defense by Iberian azure-winged magpies (Cyanopica cyanus): do they recognize the threat of brood parasitism?

The ultimate goal of nesting is the production of young and therefore predation and brood parasitism may constrain reproductive success. Breeding azurewinged magpies (Cyanopica cyanus) were exposed to mounts of an sparrowhawk (Accipiter nisus) (i.e. an avian predator on adult and fledged chicks), a female great spotted cuckoo (Clamator glandarius) (i.e. a brood parasite that also preys on eggs ...