Results 81 to 90 of about 19,485 (215)

Sperm design and variation in the New World blackbirds (Icteridae) [PDF]

, 2009
Post-copulatory sexual selection (PCSS) is thought to be one of the evolutionary forces responsible for the rapid and divergent evolution of sperm design. However, whereas in some taxa particular sperm traits are positively associated with PCSS, in other
AF Malo, AF Malo, AF Malo, BGM Jamieson, CK Cornwallis, CW LaMunyon, CW LaMunyon, D Urbach, DF Katz, DP Froman, DR Levitan, E García-Berthou, EH Morrow, EH Morrow, EJ Pellatt, EP Martins, G Arnqvist, G Burness, GA Parker, GA Parker, GA Parker, GA Parker, George M. Linz, GT Miller, HDM Moore, J Cohen, J Felsenstein, J Sivinski, JA Stoltz, JH Samour, JJL Higdon, JL Fitzpatrick, JL Fitzpatrick, JV Briskie, JV Briskie, L Locatello, LK Dybas, LZ Garamszegi, M Gomendio, M Pagel, MD Pagel, MJ Anderson, MJG Gage, MJG Gage, MJG Gage, MJG Gage, N Minoretti, O Kleven, PG Byrne, PH Harvey, PH Harvey, PI Ward, R Thornhill, RA Beatty, RA Beatty, RA Cardullo, RP Freckleton, RR Snook, S Balshine, S Calhim, S Calhim, S Humphries, S Immler, S Immler, S Immler, S Immler, S Lüpold, S Lüpold, S Pitnick, Stefan Lüpold, T Garland, T Pizzari, TE Pitcher, Tim R. Birkhead, TR Birkhead, TR Birkhead, WE Harris, WG Eberhard, WG Eberhard, WH Burrows, WV Holt, Å Franzén   +81 more
core   +2 more sources

Behavioural and fitness effects of experimental immune activation during incubation in a wild passerine

Ibis, EarlyView.
Incubation is vital for avian embryo development but demands significant parental investment, potentially at the cost of self‐maintenance and immune function. For example, the acute phase response (APR), a systemic reaction against inflammation, infection or tissue injury, can trigger sickness behaviours such as reduced activity and foraging.
Isabel Barreda, Marina García‐del Río, Santiago Merino, Manuel Fuertes‐Recuero, Alejandro Cantarero   +4 more
wiley   +1 more source

Balanced imitation sustains song culture in zebra finches

Nature Communications, 2021
Studying how songbirds learn songs can shed light on the development of human speech. An analysis of 160 tutor-pupil zebra finch pairs suggests that frequency dependent balanced imitation prevents the extinction of rare song elements and the ...
Ofer Tchernichovski, Sophie Eisenberg-Edidin, Erich D. Jarvis   +2 more
doaj   +1 more source

Beyond Critical Period Learning: Striatal FoxP2 Affects the Active Maintenance of Learned Vocalizations in Adulthood. [PDF]

, 2019
In humans, mutations in the transcription factor forkhead box P2 (FOXP2) result in language disorders associated with altered striatal structure. Like speech, birdsong is learned through social interactions during maturational critical periods, and it ...
Day, Nancy F, Heston, Jonathan B, Hobbs, Taylor G, White, Stephanie A   +3 more
core  

Cortical transformation of spatial processing for solving the cocktail party problem: a computational model(1,2,3). [PDF]

, 2016
In multisource, "cocktail party" sound environments, human and animal auditory systems can use spatial cues to effectively separate and follow one source of sound over competing sources.
Colburn, H. Steven, Dong, Junzi, Sen, Kamal   +2 more
core   +1 more source

Epigenetic‐Based Evidence for Distinct Effects of Age, Sex, and Experience in Developmental Critical Period Learning

Developmental Neurobiology, Volume 86, Issue 3, July 2026.
ABSTRACT Although much is known about the encoding of experience, how the brain organizes neural circuits capable of learning and memory formation is largely unstudied. Canonical critical periods emerge from a convergence of maturation‐ and experience‐dependent processes.
Grant W. Kunzelman, Alice Batistuzzo, Sarah E. London   +2 more
wiley   +1 more source

NONLINEAR DYNAMICS AND THE SYNTHESIS OF ZEBRA FINCH SONG

International Journal of Bifurcation and Chaos, 2012
Behavior emerges as the interaction between a nervous system, a peripheral biomechanical device and the environment. In birdsong production, this observation is particularly important: songbirds are an adequate animal model to unveil how brain structures reconfigure themselves during learning of a complex behavior as song. Therefore, it is important to
Yonatan Sanz Perl, Ezequiel M. Arneodo, Ana Amador, Gabriel B. Mindlin   +3 more
openaire   +3 more sources

Evolution of the avian digital pattern

Scientific Reports, 2019
Variation in digit number has occurred multiple times in the history of archosaur evolution. The five digits of dinosaur limbs were reduced to three in bird forelimbs, and were further reduced in the vestigial forelimbs of the emu.
Kenta Kawahata, Ingrid Rosenburg Cordeiro, Shogo Ueda, Guojun Sheng, Yuuta Moriyama, Chika Nishimori, Reiko Yu, Makoto Koizumi, Masataka Okabe, Mikiko Tanaka   +9 more
doaj   +1 more source

Behavioral Relevance of Species-Specific Vasotocin Anatomy in Gregarious Finches

Frontiers in Neuroscience, 2013
Despite substantial species differences in the vasotocin/vasopressin (VT/VP) circuitry of the medial bed nucleus of the stria terminalis (BSTm) and lateral septum (LS; a primary projection target of BSTm VT/VP cells), functional consequences of this ...
Aubrey M Kelly, James L. Goodson
doaj   +1 more source

The Cognitive Foundations of Teaching

Evolutionary Anthropology: Issues, News, and Reviews, Volume 35, Issue 2, June 2026.
ABSTRACT The propensity to teach is vital to human cultural evolution and to our ecological dominance of the planet, but its cognitive foundations remain poorly understood. Traditional explanations argue that teaching hinges on particular cognitive pre‐requisites, such as Theory of Mind.
Matthew Lomas, Lamprini Psychogiou, Christine Caldwell, Francesca Happé, Alex Thornton   +4 more
wiley   +1 more source