Results 1 to 10 of about 3,847 (87)

Wintering Town: Individual Quality of Migratory Warblers Using Green Urban Areas in a Neotropical City

Frontiers in Ecology and Evolution, 2022
Migratory birds can be familiar winter visitors of Neotropical cities. However, of the regional migrant species bird pool, only a few species are abundant in urban areas.
Rodrigo Pacheco-Muñoz, Rodrigo Pacheco-Muñoz, Adrián Ceja-Madrigal, Adrián Ceja-Madrigal, Edgar Pérez-Negrón, A. Karen Ortiz-Asbun, Jorge E. Schondube   +6 more
doaj   +1 more source

Fat Stores and Antioxidant Capacity Affect Stopover Decisions in Three of Four Species of Migratory Passerines With Different Migration Strategies: An Experimental Approach

Frontiers in Ecology and Evolution, 2022
During migratory stopovers, birds must make decisions about when and where to travel and these decisions are likely contingent on their fuel stores, food availability, and antioxidant capacity as well as seasonal changes in key environmental factors.
Clara Cooper-Mullin, Scott R. McWilliams
doaj   +1 more source

Effect of the Social Environment on Spring Migration Timing of a Songbird

Frontiers in Ecology and Evolution, 2021
The influence of the social environment on the timing of the annual cycle is poorly understood. Seasonally migratory birds are under pressure to accurately time their spring migration, and throughout the annual cycle, they may experience variability of ...
Jessica E. Deakin, Christopher G. Guglielmo, Yolanda E. Morbey   +2 more
doaj   +1 more source

Short-term mercury exposure disrupts muscular and hepatic lipid metabolism in a migrant songbird

Scientific Reports, 2022
Methylmercury (MeHg) is a global pollutant that can cause metabolic disruptions in animals and thereby potentially compromise the energetic capacity of birds for long-distance migration, but its effects on avian lipid metabolism pathways that support ...
Chad L. Seewagen, Cory R. Elowe, Alexander R. Gerson, Derrick J. E. Groom, Yanju Ma, Mustafa Yildirim, Christopher G. Guglielmo   +6 more
doaj   +1 more source

Flight muscle size reductions and functional changes following long‐distance flight under variable humidity conditions in a migratory warbler

Physiological Reports, 2023
Bird flight muscle can lose as much as 20% of its mass during a migratory flight due to protein catabolism, and catabolism can be further exacerbated under dehydrating conditions.
Derrick J. E. Groom, Betsy Black, Jessica E. Deakin, Joely G. DeSimone, M. Collette Lauzau, Bradley P. Pedro, Chad R. Straight, Kimberly P. Unger, Mark S. Miller, Alexander R. Gerson   +9 more
doaj   +1 more source

Temporal changes in avian abundance in aspen-dominated boreal mixedwood forests of central Saskatchewan, Canada

Avian Conservation and Ecology, 2018
The boreal forest provides important breeding habitat for many migratory songbirds; however, changes in disturbance regimes have led to concern for populations breeding there. Monitoring data to track changes in boreal forest bird populations are scarce.
Steven L. Van Wilgenburg, Keith A. Hobson, Kevin J. Kardynal, Elizabeth M. Beck   +3 more
doaj   +1 more source

Migratory songbirds and urban window collision mortality: vulnerability depends on species, diel timing of migration, and age class

Avian Conservation and Ecology, 2022
Hundreds of millions of birds are estimated to die annually in North America by colliding with windows, and understanding the species-level correlates of collision mortality is an important step towards mitigation.
Olivia M. Colling, Christopher G. Guglielmo, Simon J. Bonner, Yolanda E. Morbey   +3 more
doaj  

Bioacoustically derived migration arrival times in boreal birds: implications for assessing habitat quality

Avian Conservation and Ecology, 2022
Long-distance migrant songbirds are declining globally. Reversing declines requires a good understanding of habitat quality. Local studies have shown that territory settlement date (arrival) is generally correlated with density and productivity.
John J. Johnson, Erin Bayne
doaj  

No effect of carrying a leg-loop harness mounted radio transmitter on flight energy expenditure of a small migratory songbird

Journal of Field Ornithology
Radio transmitters and other miniature electronic devices have greatly enhanced our understanding of avian ecology. However, from both animal welfare and data integrity perspectives, it is crucial to determine if tracking devices adversely affect birds ...
Greg W Mitchell, Morag Dick, Alexander Macmillan, Christopher G Guglielmo   +3 more
doaj   +1 more source

Wood Thrush (Hylocichla mustelina) occupancy patterns reveal sensitivity to low precipitation on nonbreeding grounds in northern Costa Rica

Ibis, EarlyView.
Climatic change and anthropogenic disturbances are reshaping animal populations. Habitat loss and extreme climatic events are particularly strong drivers of declines in species that depend on forested areas. For migratory songbirds, climate and the persistence of suitable habitat over time are fundamental to sustaining populations annually.
Isabel Vargas‐Valverde, Natalie V. Sánchez, Manuel Spínola, Gerardo Avalos   +3 more
wiley   +1 more source