Results 11 to 20 of about 1,017,023 (300)

Experience does not change the importance of wind support for migratory route selection by a soaring bird

open access: yesRoyal Society Open Science, 2022
Migration is a complex behaviour that is costly in terms of time, energy and risk of mortality. Thermal soaring birds rely on airflow, specifically wind support and uplift, to offset their energetic costs of flight. Their migratory routes are a record of
Hester Brønnvik   +4 more
doaj   +1 more source

Fifty years of data show the effects of climate on overall skull size and the extent of seasonal reversible skull size changes (Dehnel's phenomenon) in the common shrew

open access: yesEcology and Evolution, 2022
Global climate change affects many aspects of biology and has been shown to cause body size changes in animals. However, suitable datasets allowing the analysis of long‐term relationships between body size, climate, and its effects are rare.
Jan R. E. Taylor   +4 more
doaj   +1 more source

Health monitoring in birds using bio-loggers and whole blood transcriptomics

open access: yesScientific Reports, 2021
Monitoring and early detection of emerging infectious diseases in wild animals is of crucial global importance, yet reliable ways to measure immune status and responses are lacking for animals in the wild. Here we assess the usefulness of bio-loggers for
Elinor Jax   +13 more
doaj   +1 more source

Arctic Migratory Raptor Selects Nesting Area During the Previous Breeding Season

open access: yesFrontiers in Ecology and Evolution, 2022
Migratory species have a limited time for habitat selection upon arrival at the breeding grounds. This is especially evident in arctic migrants, which are restricted by a narrow window of opportunity when environmental conditions are favorable for ...
Teja Curk   +8 more
doaj   +1 more source

Ecology of animal migration [PDF]

open access: yesCurrent Biology, 2018
Billions of animals are adapted to a travelling life, making regular return migrations between more or less distant living stations on Earth by swimming, flying, running or walking (Figure 1). Extremely long migrations are completed annually by whales between calving areas in warmer waters and feeding areas at higher latitudes in either hemisphere. The
Thomas, Alerstam, Johan, Bäckman
openaire   +2 more sources

Effect of harness design for tag attachment on the flight performance of five soaring species

open access: yesMovement Ecology, 2023
Background Bio-logging devices play a fundamental and indispensable role in movement ecology studies, particularly in the wild. However, researchers are aware of the influence that attaching devices can have on animals, particularly on their behaviour ...
Arianna Longarini   +5 more
doaj   +1 more source

Classifying biogeographic realms of the endemic fauna in the Afro‐Arabian region

open access: yesEcology and Evolution, 2020
Aim Understanding diversity patterns and identifying the environmental factors that shape these patterns are essential for ecology and conservation. The Afro‐Arabian region comprises one of the most important biogeographic areas connecting continents ...
Alaaeldin Soultan   +2 more
doaj   +1 more source

Migration Dynamics for the Ideal Free Distribution [PDF]

open access: yes, 2006
This article verifies that the ideal free distribution (IFD) is evolutionarily stable, provided the payoff in each patch decreases with an increasing number of individuals.
Cressman, Ross, Křivan, Vlastimil
core   +2 more sources

Collective animal migration [PDF]

open access: yesCurrent Biology, 2018
Migratory movement is a strategy employed by a broad range of taxa as a response to temporally and spatially varying environmental conditions. Multiple factors can drive animal migration, including movement to hospitable environments when local conditions become unfavourable (such as to reduce nutritional and thermoregulatory stress), movement to find ...
openaire   +3 more sources

Opposition-Based Animal Migration Optimization [PDF]

open access: yesMathematical Problems in Engineering, 2013
AMO is a simple and efficient optimization algorithm which is inspired by animal migration behavior. However, as most optimization algorithms, it suffers from premature convergence and often falls into local optima. This paper presents an opposition-based AMO algorithm. It employs opposition-based learning for population initialization and evolution to
Yi Cao, Xiangtao Li, Jianan Wang
openaire   +2 more sources

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