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Additive negative effects of Philornis nest parasitism on small and declining Neotropical bird populations
(Elsevier, 2018-09)
The declining-population paradigm holds that small populations are particularly vulnerable to anthropogenic influences such as habitat destruction, pollution and species introductions. While the effects of particular ...
Dense canopy cover over House Wren (Troglodytes aedon) nests increases latency of brood parasitism by Shiny Cowbirds (Molothrus bonariensis)
(Csiro Publishing, 2012-02)
Obligate brood parasites must find host nests in which to lay their eggs. The search for a suitable host nest is predicted to be more difficult if the host nest is well-concealed by vegetation (nest-concealment hypothesis) ...
Genetic patterns of repeat and multiple parasitism by screaming cowbirds, a specialist brood parasite
(Academic Press Ltd - Elsevier Science Ltd, 2020-09)
Avian brood parasites lay their eggs in the nests of other species, leaving the hosts to care for the parasitic offspring. The bookkeeping hypothesis predicts that, in order to reduce competition between parasitic nestlings, ...
Screaming Cowbird parasitism on nests of Solitary Caciques and Cattle Tyrants
(Wilson Ornithological Society, 2010-12)
The Screaming Cowbird (Molothrus rufoaxillaris) is one of the most specialized brood parasites with only three known hosts: Baywing (Agelaioides badius), the main host throughout most of its range, and two alternative hosts ...
A novel method of rejection of brood parasitic eggs reduces parasitism intensity in a cowbird host
(The Royal Society, 2013-03)
The hosts of brood parasitic birds are under strong selection pressure to recognize and remove foreign eggs from their nests, but parasite eggs may be too large to be grasped whole and too strong to be readily pierced by ...
Effects of nest-site characteristics and parental activity on cowbird parasitism and nest predation in Brown-and-yellow MarshbirdsEfectos de las características del sitio de nidificación y actividad parental en el parasitismo de cría por tordos y predación de nidos en Pseudoleistes virescens
(Wiley Blackwell Publishing, Inc, 2009-03)
Nest-site selection and nest defense are strategies for reducing the costs of brood parasitism and nest predation, two selective forces that can influence avian nesting success and fitness. During 2001-2002, we analyzed ...
Brood parasitism disproportionately increases nest provisioning and helper recruitment in a cooperatively breeding bird
(Springer, 2011-12)
Obligate avian brood parasites lay their eggs in nests of other species (hosts), which raise parasitic young. Parasitic nestlings are likely to influence host's parental behaviours as they typically beg for food more ...
Coevolutionary arms race between a specialist brood parasite, the Screaming Cowbird, and its host, the Grayish Baywing
(Springer, 2019-10)
Interspecific brood parasites exploit the parental care of host species. This exploitation entails fitness costs for the hosts, which favor the evolution of antiparasitic defenses. Host defenses select for counter-defenses ...
More than just nestlings: incidence of subcutaneous Philornis (Diptera: Muscidae) nest flies in adult birds
(Springer, 2020-06)
Philornis flies Meinert (Diptera: Muscidae) have been documented parasitizing over 250 bird species, some of which are endemic species threatened with extinction. Philornis parasitism is hypothesized to affect nestlings ...
Botfly parasitism effects on nestling growth and mortality of Red-crested Cardinals
(Wilson Ornithological Society, 2011-03)
We collected observational data in three consecutive breeding seasons to study interactions between the botfly Philornis seguyi and Red-crested Cardinals (Paroaria coronata) in a temperate zone near the southern limit of ...