Results 21 to 30 of about 195,308 (340)

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

The Migration of Birds [PDF]

Nature, 1874
MORE than four years ago an article, headed as above, appeared in this journal (vol. x. p. 415) giving rise to some comments of more or less importance (torn, cit., pp. 459, 520, and xi. p. 5). Since that time two very remarkable treatises on the subject have come forth, the one by Dr.
openaire   +6 more sources

Baseline and Stress-Induced Plasma Corticosterone during Long-Distance Migration in the Bar-Tailed Godwit, Limosa lapponica [PDF]

, 2002
The specific roles of corticosterone in promotion of avian migration remain unclear even though this glucocorticosteroid is elevated in many migrating bird species.
Jukema, Joop,, Landys-Ciannelli, Mėta M.,, Piersma, Theunis,, Ramenofsky, Marilyn,, Wijker, Arnold,, Wingfield, John C.,   +5 more
core   +15 more sources

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

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

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

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

Matching times of leading and following suggest cooperation through direct reciprocity during V-formation flight in ibis [PDF]

, 2015
One conspicuous feature of several larger bird species is their annual migration in V-shaped or echelon formation. When birds are flying in these formations, energy savings can be achieved by using the aerodynamic up-wash produced by the preceding bird ...
Alan M. Wilson, Andersson, Bairlein, Bernhard Voelkl, Cutts, Fish, Hainsworth, James R. Usherwood, Johannes Fritz, Mantel, Markus Unsöld, Steven J. Portugal   +11 more
core   +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