Results 11 to 20 of about 31,615 (305)

Individual variability and versatility in an eco-evolutionary model of avian migration. [PDF]

open access: yesProc Biol Sci, 2020
Seasonal migration is a complex and variable behaviour with the potential to promote reproductive isolation. In Eurasian blackcaps (Sylvia atricapilla), a migratory divide in central Europe separating populations with southwest (SW) and southeast (SE ...
Delmore KE   +18 more
europepmc   +2 more sources

Stochastic simulations reveal few green wave surfing populations among spring migrating herbivorous waterfowl [PDF]

open access: yesNature Communications, 2019
The green wave hypothesis is often considered a key driver of spring migration in avian herbivores. Here the authors employ a multispecies comparison and find that migration did not track the green wave better than simulated stochastic migrations.
Xin Wang   +15 more
doaj   +2 more sources

Transatlantic spread of highly pathogenic avian influenza H5N1 by wild birds from Europe to North America in 2021 [PDF]

open access: yes, 2022
Highly pathogenic avian influenza (HPAI) viruses of the A/Goose/Guangdong/1/1996 lineage (GsGd), which threaten the health of poultry, wildlife and humans, are spreading across Asia, Europe, Africa and North America but are currently absent from South ...
Alkie, T. N.,   +80 more
core   +1 more source

Morphological constraints on changing avian migration phenology [PDF]

open access: yesJournal of Evolutionary Biology, 2017
AbstractMany organisms at northern latitudes have responded to climate warming by advancing their spring phenology. Birds are known to show earlier timing of spring migration and reproduction in response to warmer springs. However, species show heterogeneous phenological responses to climate warming, with those that have not advanced or have delayed ...
A. P. Møller, D. Rubolini, N. Saino
openaire   +2 more sources

Expression Atlas of Avian Neural Crest Proteins: Neurulation to Migration [PDF]

open access: yesDevelopmental Biology, 2021
ABSTRACT Neural crest (NC) cells are a dynamic population of embryonic stem cells that create various adult tissues in vertebrate species including craniofacial bone and cartilage and the peripheral and enteric nervous systems. NC development is a conserved and complex process that is controlled by a tightly regulated
Brigette Y. Monroy   +5 more
openaire   +4 more sources

Migratory restlessness in an equatorial nonmigratory bird [PDF]

open access: yes, 2006
The urge of captive birds to migrate manifests itself in seasonally occurring restlessness, termed "Zugunruhe." Key insights into migration and an endogenous basis of behavior are based on Zugunruhe of migrants but have scarcely been tested in ...
Barbara Helm   +4 more
core   +1 more source

Seasonal Dynamics and Diversity of Haemosporidians in a Natural Woodland Bird Community in Slovakia

open access: yesDiversity, 2021
Despite the ubiquity of disease seasonality, mechanisms behind the fluctuations in seasonal diseases are still poorly understood. Avian hemosporidiosis is increasingly used as a model for ecological and evolutionary studies on disease dynamics, but the ...
Alžbeta Šujanová   +2 more
doaj   +1 more source

Early and Late Migrating Avian Individuals Differ in Constitutive Immune Function and Blood Parasite Infections – But Patterns Depend on the Migratory Strategy

open access: yesFrontiers in Ecology and Evolution, 2022
Billions of birds migrate every year. To conduct a successful migration, birds undergo a multitude of physiological adaptions. One such adaptation includes adjustments of immune function, however, little is known about intraspecies (between-individual ...
Arne Hegemann   +3 more
doaj   +1 more source

The Genetics and Evolution of Avian Migration [PDF]

open access: yesBioScience, 2007
One of the characteristics of avian migration is its variability within and among species. Variation in migratory behavior, and in physiological and morphological adaptations to migration, is to a large extent due to genetic differences. Comparative studies suggest that migratory behavior has rapidly and independently evolved in different lineages. One
openaire   +2 more sources

Timing avian long-distance migration: from internal clock mechanisms to global flights [PDF]

open access: yes, 2017
Migratory birds regularly perform impressive long-distance flights, which are timed relative to the anticipated environmental resources at destination areas that can be several thousand kilometres away.
Åkesson, S.   +24 more
core   +1 more source

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