Results 81 to 90 of about 31,615 (305)

Mixed haemosporidian infections are associated with higher fearfulness in Yellow Wagtail (Motacilla flava)

open access: yes, 2017
Blood parasite infections have been shown to influence behavioural traits of their avian hosts, in particular activity level and boldness. Following the hypothesis that a mixed infection by different parasite species should have higher effects than ...
M.P. Marinov   +14 more
core   +1 more source

Flight of the dragons: a global review of migration in Odonata

open access: yesBiological Reviews, EarlyView.
ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund   +3 more
wiley   +1 more source

Seasonal changes in patterns of gene expression in avian song control brain regions [PDF]

open access: yes, 2012
Photoperiod and hormonal cues drive dramatic seasonal changes in structure and function of the avian song control system. Little is known, however, about the patterns of gene expression associated with seasonal changes.
Thompson, Christopher K   +59 more
core   +1 more source

Counting cases, conserving species: addressing highly pathogenic avian influenza in wildlife

open access: yesBiological Reviews, EarlyView.
ABSTRACT Highly pathogenic avian influenza (HPAI) has become a critical threat to wildlife, shifting from a seasonal epizootic to a persistent, year‐round panzootic with global consequences. Here, we summarise the origin, evolutionary mechanisms, and expanding host range of the current H5N1 virus (clade 2.3.4.4b) and assess its impact on wildlife. Over
Ulrich Knief   +4 more
wiley   +1 more source

Conservation of North American migratory birds: insights from developments in tracking technologies

open access: yesAvian Conservation and Ecology
Conservation of North American migratory birds requires information about their movements and regulating factors throughout the annual cycle. Over the past 10 or more years, improvements in tracking technology and quantitative approaches to assessing ...
Martha S Torstenson   +8 more
doaj   +1 more source

Flexibility in avian migration across scales

open access: yes, 2020
Migratory birds form a network of organisms that connect the world, serving as indicators of ecosystem health and biodiversity on a hemispheric scale. Unfortunately, avian migrants are threatened by the rapidly increasing pressures of global change.
openaire   +2 more sources

Wild bird surveillance around outbreaks of highly pathogenic avian influenza A(H5N8) virus in the Netherlands, 2014, within the context of global flyways [PDF]

open access: yes, 2015
Highly pathogenic avian influenza (HPAI) A(H5N8) viruses that emerged in poultry in east Asia since 2010 spread to Europe and North America by late 2014. Despite detections in migrating birds, the role of free-living wild birds in the global dispersal of
Verhagen, J.H.   +39 more
core   +1 more source

What drives animal responses to high severity fire? The role of functional traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux   +3 more
wiley   +1 more source

Global and Local Persistence of Influenza A(H5N1) Virus

open access: yesEmerging Infectious Diseases, 2014
An understanding of the global migration dynamics of highly pathogenic avian influenza A(H5N1) virus is helpful for surveillance and disease prevention.
Xianbin Li   +9 more
doaj   +1 more source

Time trees and Clock genes: a Systematic Review and Comparative Analysis of Contemporary Avian Migration Genetics (Dataset)

open access: yes, 2023
Complete dataset of Clock and Adcyap1 alleles, distance matrices, and migration data used in the review and meta-analysis "Time trees and Clock genes: a Systematic Review and Comparative Analysis of Contemporary Avian Migration Genetics"
Rubolini, Diego   +15 more
core   +1 more source

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