Results 21 to 30 of about 4,598 (173)

Behavior and survival of parasitic Shiny Cowbird (<i>Molothrus bonariensis</i>) fledglings. [PDF]

Curr Zool
Abstract For songbirds, the post-fledging period is critical for development and survival, as young must learn to get food, practice flying, and identify predators to become independent from their parents and disperse or migrate. Obligate avian brood parasites, like cuckoos and cowbirds, lay eggs in nests of other bird species that ...
Crudele I, Riovitti B, Reboreda JC, Fiorini VD.   +3 more
europepmc   +4 more sources

Supernormal Stimulus Begging Calls of Brood-Parasitic Nestlings Depress the Parental Care in an Uncommon Host. [PDF]

Ecol Evol
The exaggerated begging calls of brood‐parasitic nestlings, for example, the Common Cuckoo, could serve as a supernormal stimulus to the host parents, but their effectiveness in uncommon host species remains unclear. In this study, we tested the effect of cuckoo nesting begging calls on an uncommon host species, the Barn Swallow, with manipulative ...
Tian L, Han R, Su J, Jia S, Yi C, Wen J, Zhang Z, Li D, Liu Y.   +8 more
europepmc   +2 more sources

No Sex-Differences in Learning Trap-Gap Problems in Zebra Finches. [PDF]

Ecol Evol
This study examined whether male zebra finches, which play a larger role in nest building, show superior physical cognition compared to females using trap‐gap tasks. Contrary to expectations, no sex differences were found in learning or task transfer performance, and most birds relied on simple cue‐based strategies rather than object–gap relationships.
Lambert CT, Whittaker BA, Neil B, Poole C, Camacho-Alpízar A, Self JL, Blunk SC, Guillette LM.   +7 more
europepmc   +2 more sources

DEPREDATION OF A SHINY COWBIRD Molothrus bonariensis BY A COMMON BOA (Boa constrictor) IN MANABÍ, ECUADOR [PDF]

, 2023
We present a sightseen of a juvenile Common Boa Boa constrictor preying on an individual of Shiny Cowbird Molothrus bonariensis. The event occurred in Manabí, Ecuador and lasted almost two hours since the attack started until the prey was completely ...
Williams, Cornelio, Carrera, Martín, Samuelsson, Claudia, Cornelio Williams, Martín Carrera, Claudia Samuelsson   +5 more
core   +1 more source

Emergence of Livestock-Associated Methicillin-Resistant Staphylococcus aureus ST398 in Wild Birds, Brazil. [PDF]

Microbiologyopen
In a protected forest fragment in southern Brazil, 197 wild birds were sampled, with 12.2% carrying Staphylococcus aureus. Two MRSA ST398 strains, the first reported in Brazilian wild birds, were identified. Genomic analysis revealed resistance and virulence genes, linking these strains to pigs and underscoring the critical need for resistance ...
Ribas MR, Vásquez-Ponce F, Cardoso R, Mesa D, Rocha G, Wolleck VF, Dal Pizzol JL, de Assunção IBF, Oliveira VPE, Salvador G, Rodrigues AT, Melocco GB, Esposito F, Becerra J, Lincopan N, Ferreira FA, Sincero TCM, Palmeiro JK, Wosiacki SR, Osaki SC.   +19 more
europepmc   +2 more sources

Molothrus bonariensis subsp. bonariensis

, 2021
Molothrus bonariensis bonariensis (Tordo renegrido) R. Residente. D. Toda la provincia (Nores et al., 1991; López de Casenave et al., 1998; Aparicio et al., 2008; Heredia, 2011; Coria, 2012b; Coria et al., 2015a, b, 2017). C. No Amenazada.
Coria, Oscar R., Quiroga, Oscar B., Navarro, José L., Heredia, Javier, Torres, Ricardo, Lima, Javier   +5 more
openaire   +2 more sources

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

Journal of Avian Biology, Volume 2023, Issue 11-12, November/December 2023., 2023
Brood parasites are expected to lay only one egg per parasitized nest, as the existence of several parasitic nestlings in a brood increases competition and can lead the starvation of some of them. However, multiparasitism (laying of two or more eggs by one or more parasitic females in a single host nest) is surprisingly frequent.
Manuel Soler, Tomás Pérez‐Contreras, Francisco Ruiz‐Raya   +2 more
wiley   +1 more source

Life‐stage and sex influence Philornis ectoparasitism in a Neotropical woodpecker Melanerpes striatus with essential male parental care

Ibis, Volume 165, Issue 4, Page 1235-1250, October 2023., 2023
The nestlings of many Neotropical bird species suffer from Philornis (Diptera: Muscidae) ectoparasitism. Although nestlings are typically considered the intended targets, recent work indicates that Philornis infest adult birds more frequently than previously appreciated, yet few studies have concurrently surveyed nestlings and adults for Philornis in ...
Joshua B. LaPergola
wiley   +1 more source

Ontogenetic effects of brood parasitism by the Brown‐headed Cowbird on host offspring

Ecology, Volume 104, Issue 3, March 2023., 2023
Abstract Nest‐sharer avian brood parasites do not evict or otherwise kill host chicks, but instead inflict a range of negative effects on their nestmates that are mediated by interactions between the parasite and host life history traits. Although many of the negative fitness effects of avian brood parasitism are well documented across diverse host ...
Todd M. Jones, Alexander J. Di Giovanni, Mark E. Hauber, Michael P. Ward   +3 more
wiley   +1 more source

Molothrus bonariensis subsp. bonariensis

, 2017
Molothrus bonariensis bonariensisEstancia La Marcela, (Set.), 1 ej. 47 gr (LGP).Comentarios. Para más información sobre el peso de esta subespecie en nuestro país (ver Fiora, 1934; Contreras, 1975, 1979; Contino, 1980; Fraga, 1985; Mason, 1987; Salvador, 1990, 2014; Mermoz y Reboreda, 1994; Di Giacomo, 2005; Camperi y Darrieu, 2005;
Pagano, Luis G., Salvador, Sergio A.
openaire   +3 more sources