Results 191 to 200 of about 4,952 (252)

Exploring drivers and costs of partial trans‐Saharan migration in juvenile vultures

Ibis, EarlyView.
Partial migration occurs when only a subset of individuals within a population undertakes a migratory journey. The decision to migrate can be influenced by intrinsic traits (e.g. sex or physical condition) as well as by extrinsic factors (e.g. social environment or resource availability).
Eneko Arrondo, Ana Sanz‐Aguilar, Andrea Santangeli, Manuel De La Riva, David Serrano, Ainara Cortés‐Avizanda, Olivier Duriez, Juan Manuel Pérez‐García, José Antonio Sanchez‐Zapata, Martina Carrete, Juan Oltra, Antoni Margalida, Pilar Oliva‐Vidal, Guillermo Blanco, Oscar Frías, Félix Martínez, José Luis González‐Del Barrio, José María Martínez, José Antonio Donázar   +18 more
wiley   +1 more source

Movements, growth rates and strong sexual segregation in critically endangered tope sharks Galeorhinus galeus in the Northeast Atlantic. [PDF]

J Fish Biol
Cameron LWJ, Jones EO, Mensink PJ, Roche WK, Wögerbauer C, Payne NL.   +5 more
europepmc   +1 more source

Fine‐scale genetic structure in co‐operatively breeding Palmchats (Dulus dominicus) suggests mixed kinship in compound nests

Ibis, EarlyView.
Fine‐scale genetic structure in animal populations can create opportunities for both kin‐directed co‐operation and kin competition. Knowledge of kinship is therefore key to understanding the selective pressures shaping sociality as well as the effects of social behaviour on local genetic structure.
Joshua B. LaPergola, Gavin M. Leighton, Christina Riehl   +2 more
wiley   +1 more source

Personality variation in a marine snail and heterogeneous selection in natural populations. [PDF]

Behav Ecol
Nguyen BM, Johnson DW.
europepmc   +1 more source

Can you really change your stripes? Stable wing ornamentation suggests limited condition‐dependent signalling in female common eiders

Ibis, EarlyView.
Variation in the expression of white ornaments, such as flank spots or wing stripes, has previously been related to indices of individual quality in birds. We measured the white wing stripes of colour‐banded female common eiders Somateria mollissima in three islands in Iceland from 2014 to 2023, to determine whether the expression of these ornaments is
Jón Einar Jónsson, Elisabeth Knudsen, James A. Fletcher, Ellen Magnúsdóttir, Árni Ásgeirsson, Jamie N. Carroll   +5 more
wiley   +1 more source

Apparent Survival of Territorial Golden Eagles Using Non-Invasive Genetic Profiling. [PDF]

Ecol Evol
Whitfield DP, Sandercock BK, Ogden R, Tingay R, Whitfield P.   +4 more
europepmc   +1 more source

Connectivity between breeding sites, wintering areas, and migration routes in Common Terns (Sterna hirundo) breeding in the Western Palaearctic

Ibis, EarlyView.
Detailed knowledge about bird migration patterns can enhance our understanding of the evolution of migration and temporal changes in space use throughout the annual cycle. Additionally, as many migratory bird species are experiencing population declines, understanding the connectivity between their spatial distributions during breeding, migration and ...
Yosef Kiat, Eli Haviv, Yoav Perlman, Inbal Schekler   +3 more
wiley   +1 more source

Intraindividual, intraspecific, and interspecific variation shapes natural selection and its detection in two convergently-evolved lizard species. [PDF]

PLoS One
Des Roches S, Lambert MR, Brinkmeyer MS, Howells JM, Dettinger A, Rosenblum EB.   +5 more
europepmc   +1 more source

Conservation implications of shifting habitat use in migrating insects: Selection patterns in a threatened damselfly show that season‐specific actions are needed

Insect Conservation and Diversity, EarlyView.
Well‐preserved heathlands of NW Italy are the main overwintering habitat of Sympecma paedisca, while grassy margins in farmland are used only in summer and are avoided from autumn onwards. Grassy margins in farmland act as corridors during the species' migrations between its breeding (ricefields) and overwintering (lowland heathlands) grounds ...
Leonardo Siddi, Martina Cadin, Mattia Brambilla, Giacomo Assandri   +3 more
wiley   +1 more source

Spatiotemporal, Microhabitat, and Climatic Variance in Disjunct Populations of Co-occurring Pinyon-Juniper Woodland Dwelling Chipmunks and Brushmice. [PDF]

Zool Stud
Sullivan RM, Wilson WK.
europepmc   +1 more source