Results 41 to 50 of about 46,378 (257)

Lingual articulation in songbirds [PDF]

open access: yesJournal of Experimental Biology, 2015
Lingual articulation in humans is one of the primary means of vocal tract resonance filtering that produces the characteristic vowel formants of speech. In songbirds, the function of the tongue in song has not been thoroughly examined, although recent research has identified the oropharyngeal-esophageal cavity as a resonance filter that is actively ...
Roderick A, Suthers   +2 more
openaire   +2 more sources

Human infections associated with wild birds. [PDF]

open access: yes, 2008
IntroductionWild birds and especially migratory species can become long-distance vectors for a wide range of microorganisms. The objective of the current paper is to summarize available literature on pathogens causing human disease that have been ...
Bauchinger, Ulf   +4 more
core   +1 more source

Evolution of female promiscuity in Passerides songbirds

open access: yesBMC Evolutionary Biology, 2019
Female promiscuity is highly variable among birds, and particularly among songbirds. Comparative work has identified several patterns of covariation with social, sexual, ecological and life history traits.
J. Lifjeld   +9 more
semanticscholar   +1 more source

Predicting present and future habitats using LiDAR to integrate research and monitoring with landscape analyses

open access: yesThe Forestry Chronicle
Managed forests contribute to both economic and non-timber values, but the ecological role of managed, including planted, forests to biodiversity objectives at the landscape scale needs to be better understood.
David A. MacLean   +21 more
doaj   +1 more source

(Micro)evolutionary changes and the evolutionary potential of bird migration

open access: yes, 2018
Seasonal migration is the yearly long-distance movement of individuals between their breeding and wintering grounds. Individuals from nearly every animal group exhibit this behavior, but probably the most iconic migration is carried out by birds, from ...
A Helbig   +81 more
core   +1 more source

Bison Reintroduction to Mixed-Grass Prairie Is Associated With Increases in Bird Diversity and Cervid Occupancy in Riparian Areas

open access: yesFrontiers in Ecology and Evolution, 2022
In grassland ecosystems, grazing by large herbivores is a highly influential process that affects biodiversity by modifying the vegetative environment through selective consumption.
Andy J. Boyce   +3 more
doaj   +1 more source

Involvement of the cortico-basal ganglia-thalamocortical loop in developmental stuttering [PDF]

open access: yes, 2019
Stuttering is a complex neurodevelopmental disorder that has to date eluded a clear explication of its pathophysiological bases. In this review, we utilize the Directions Into Velocities of Articulators (DIVA) neurocomputational modeling framework to ...
Chang, Soo-Eun, Guenther, Frank H.
core   +1 more source

Birds That Don't Exist: Niche Pre-Emption as a Constraint on Morphological Evolution in the Passeroidea. [PDF]

open access: yesEcol Lett
We use topological data analysis to reveal a persistent morphological gap in a major group of songbirds (superfamily Passeroidea). The gap remained unoccupied for millions of years, even though nearby morphologies are common and the same body form exists in other groups of birds.
Chia SY   +4 more
europepmc   +2 more sources

The direct response of the gonads to cues of stress in a temperate songbird species is season-dependent. [PDF]

open access: yes, 2013
The gonadotropin releasing hormone (GnRH) system in the hypothalamus is often considered the final point in integration of environmental cues as they pertain to the reproductive axis.
Bentley, George   +2 more
core   +2 more sources

Migratory connectivity and barrier-crossing flights of Vermivora warblers are associated with synoptic weather conditions. [PDF]

open access: yesJ Anim Ecol
Tracking data from ~10 g songbirds illuminate how weather conditions affect the initiation of long‐distance migratory flights across the Gulf of Mexico during autumn and spring. Seasonal differences and weak migratory connectivity near the Gulf suggest adaptive responses to weather, with future climate trends potentially reducing crossing favorability ...
Kramer GR   +13 more
europepmc   +2 more sources

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