Results 11 to 20 of about 29,566 (302)

The global ecology of bird migration: patterns and processes [PDF]

Frontiers of Biogeography, 2016
Nearly 20% of bird species are migratory, their seasonal movements causing a redistribution of bird diversity that radically changes avian community composition worldwide.
Marius Somveille
doaj   +2 more sources

Sexual dimorphism in adult Little Stints (Calidris minuta) revealed by DNA sexing and discriminant analysis [PDF]

PeerJ, 2018
Background The sex of an individual organism plays such an important role in its life cycle that researchers must know a bird’s sex to interpret key aspects of its biology.
Aleksandra Niemc, Magdalena Remisiewicz, Joel Avni, Les G. Underhill   +3 more
doaj   +2 more sources

Climatic variation in Africa and Europe has combined effects on timing of spring migration in a long-distance migrant Willow Warbler Phylloscopus trochilus [PDF]

PeerJ, 2020
Background The arrival of many species of migrant passerine in the European spring has shifted earlier over recent decades, attributed to climate change and rising temperatures in Europe and west Africa.
Magdalena Remisiewicz, Les G. Underhill
doaj   +2 more sources

Miniaturized multi-sensor loggers provide new insight into year-round flight behaviour of small trans-Sahara avian migrants

Movement Ecology, 2018
Background Over the past decade, the miniaturisation of animal borne tags such as geolocators and GPS-transmitters has revolutionized our knowledge of the whereabouts of migratory species.
Felix Liechti, Silke Bauer, Kiran L. Dhanjal-Adams, Tamara Emmenegger, Pavel Zehtindjiev, Steffen Hahn   +5 more
doaj   +1 more source

Distribution and Numbers of Three Globally Threatened Waterbird Species Wintering in Morocco: The Common Pochard, Marbled Teal, and White-Headed Duck

International Journal of Zoology, 2021
Morocco plays a key role in the life of many migratory birds and their survival, thanks to the diversity and richness of its ecosystems. The International Waterbird Census (IWC) has been regularly implemented in Morocco since 1983. Thanks to this program,
Asmaâ Ouassou, Mohamed Dakki, Mohammed-Aziz El Agbani, Abdeljebbar Qninba, R’himou El Hamoumi   +4 more
doaj   +1 more source

The relative importance and biological significance of non-stop and intermittent flight strategies in bird migrants crossing the Sahara [PDF]

, 2007
IX Summary The aim of this thesis was to investigate the flight and resting strategies of birds crossing the Sahara on migration. In order to overcome the severe limitations of ground observations, we chose radar to obtain continuous data of the temporal
Schmaljohann, Heiko
core   +1 more source

Migratory restlessness in an equatorial nonmigratory bird [PDF]

, 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, Eberhard Gwinnerz, Gwinner, E., Helm, B., Eberhard Gwinner   +4 more
core   +1 more source

Linking migratory performance to breeding phenology and productivity in an Afro-Palearctic long-distance migrant

Scientific Reports, 2021
Understanding the relationship between migratory performance and fitness is crucial for predicting population dynamics of migratory species. In this study, we used geolocators to explore migration performance (speed and duration of migratory movements ...
Joana S. Costa, Steffen Hahn, Pedro M. Araújo, Kiran L. Dhanjal-Adams, Afonso D. Rocha, José A. Alves   +5 more
doaj   +1 more source

Large-Scale Climatic Patterns Have Stronger Carry-Over Effects than Local Temperatures on Spring Phenology of Long-Distance Passerine Migrants between Europe and Africa

Animals, 2022
Earlier springs in temperate regions since the 1980s, attributed to climate change, are thought to influence the earlier arrival of long-distance migrant passerines.
Magdalena Remisiewicz, Les G. Underhill
doaj   +1 more source

Does mist-netting provide reliable data to determine the sex and age ratios of migrating birds? A case study involving the Great Tit (Parus major) and the Blue Tit (Cyanistes caeruleus)

Ekológia (Bratislava), 2013
Nowakowski J.K., Chruściel J., Muś K.: Does mist-netting provide reliable data to determine the sex and age ratios of migrating birds? A case study involving the Great Tit (Parus major) and the Blue Tit (Cyanistes caeruleus).
Nowakowski Jarosław K., Chruściel Jacek, Muś Krzysztof   +2 more
doaj   +1 more source