Results 61 to 70 of about 7,418 (180)

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

Sexual Dimorphism in the Early Embryogenesis in Zebra Finches

PLoS ONE, 2014
Sex-specific gene expression before the onset of gonadogensis has been documented in embryos of mammals and chickens. In several mammalian species, differences in gene expression are accompanied by faster growth of pre-implantation male embryos. Here we asked whether avian embryos before gonadal differentiation are also sex-dimorphic in size and what ...
Tagirov, Makhsud, Rutkowska, Joanna
openaire   +5 more sources

Western Bluebirds (Sialia mexicana) Use Public Information for Prospecting but Not Ultimate Nest Site Selection

Ecology and Evolution, Volume 16, Issue 8, August 2026.
Prospecting Western Bluebirds demonstrated a strong response to public information simulating reproductive success within nest boxes deployed in agricultural systems, but this initial attraction did not translate to increased box selection the following breeding season.
Fatime W. Jomaa, Cody Pham, Eleanor K. MacDonald, Daniel S. Karp, Matthew D. Johnson   +4 more
wiley   +1 more source

Maternal glucocorticoids have persistent effects on offspring social phenotype irrespective of opportunity for social buffering

Journal of Animal Ecology, Volume 95, Issue 8, Page 1326-1338, August 2026.
This study tests whether early‐life maternal association buffers offspring from the effects of prenatal stress in a facultatively social lizard. Despite clear effects of maternal glucocorticoids on growth and social behaviour, social associations did not mitigate these effects, revealing limits to social buffering in this species.
Kirsty J. MacLeod, Alix Bouffet‐Halle, Erik Wapstra, Tobias Uller, Geoffrey M. While   +4 more
wiley   +1 more source

Social information about others' affective states in a human‐altered world

Journal of Animal Ecology, Volume 95, Issue 8, Page 1311-1325, August 2026.
Faced with anthropogenic change, animals now encounter challenges different from their evolutionary past. To cope with such challenges, animals may use social information about others' affective states to guide their decisions. Considering affective states of wild animals could have important implications for animal welfare and wildlife conservation ...
Luca G. Hahn, Jordan McDowall, Margaux Vanhussel, Mike Mendl, Alex Thornton   +4 more
wiley   +1 more source

Characterization of the finch embryo supports evolutionary conservation of the naive stage of development in amniotes

eLife, 2015
Innate pluripotency of mouse embryos transits from naive to primed state as the inner cell mass differentiates into epiblast. In vitro, their counterparts are embryonic (ESCs) and epiblast stem cells (EpiSCs), respectively.
Siu-Shan Mak, Cantas Alev, Hiroki Nagai, Anna Wrabel, Yoko Matsuoka, Akira Honda, Guojun Sheng, Raj K Ladher   +7 more
doaj   +1 more source

Environmental factors associated with nesting habits and age shape the composition and connection between skin and uropygial gland microbiomes of birds

Journal of Animal Ecology, Volume 95, Issue 8, Page 1435-1452, August 2026.
This study provides new insights into how ecological conditions influence the evolution of host‐associated symbiotic communities and their functional roles. The findings suggest that pathogen pressures linked to nesting habits in birds shape bacterial communities of the uropygial gland, and their connection with the skin microbiome, where the ...
Ester Martínez‐Renau, Kasun H. Bodawatta, Antonio M. Martín‐Platero, Manuel Martín‐Vivaldi, María Dolores Barón, Cristina Ruiz‐Castellano, Manuel Martínez‐Bueno, Knud A. Jønsson, Michael Poulsen, Juan José Soler   +9 more
wiley   +1 more source

A comparison of reptilian and avian olfactory receptor gene repertoires: Species-specific expansion of group γ genes in birds

BMC Genomics, 2009
Background The detection of odorants is mediated by olfactory receptors (ORs). ORs are G-protein coupled receptors that form a remarkably large protein superfamily in vertebrate genomes.
Kempenaers Bart, Stensmyr Marcus C, Kuryshev Vladimir Y, Steiger Silke S, Mueller Jakob C   +4 more
doaj   +1 more source

The role of viability selection in shaping short‐ and long‐term consequences of early‐life conditions: An experiment in the Alpine swift

Journal of Animal Ecology, Volume 95, Issue 8, Page 1401-1418, August 2026.
In an experimental brood‐size manipulation in Alpine swifts, smaller nestlings were selectively lost during growth, eliminating treatment differences in adult size, yet individuals from enlarged broods showed higher reproductive performance. Abstract Environmental conditions experienced early in life can shape growth, morphology and survival, and can ...
Bashar Jarayseh, Giulia Masoero, Pierre Bize   +2 more
wiley   +1 more source