The interactions between brood parasitic birds and their host species provide one of the best
model systems for coevolution. Despite being intensively studied, the parasite–host system …

Obligately cooperative breeders (cooperators) display a negative growth rate once they fall
below a minimum density. Constraints imposed by natural enemies, such as predators or …

Avian brood parasites, including cuckoos and cowbirds, have multiple negative effects on
their hosts. We analysed the effects of Shiny Cowbird Molothrus bonariensis parasitism on …

The Yellow Cardinal Gubernatrix cristata is a globally endangered passerine endemic to
southern South America. Although the conservation status of this species is alarming, there …

The shiny cowbird Molothrus bonariensis parasitizes many species with different life-history
traits and has a detrimental effect on the survival of the progeny of the hosts. In response …

We examined brood parasitism by Brown-headed Cowbirds (Molothrus ater) on a prairie-
nesting population of Red-winged Blackbirds (Agelaius phoeniceus) from 1984 to 1997 and …

Obligate brood parasites neither build their own nests nor rear their offspring. Instead, they
lay their eggs in nests of individuals of other species (hosts) that take care of the parasite's …

Avian brood parasites reduce host fitness through the addition of parasitic eggs and the
removal of host eggs. Both parasitic egg–addition and host egg–removal may be important …

Avian brood parasites depend on other species, the hosts, to raise their offspring. During the
breeding season, parasitic cowbirds (Molothrus sp.) search for potential host nests to which …

Parasitic cowbirds lay eggs in the nests of other species and dupe them into caring for their
young. Unlike other brood parasites, cowbirds have not developed egg mimicry or bizarre …