Results 31 to 40 of about 1,197,949 (348)

No “carry-over” effects of tracking devices on return rate and parameters determining reproductive success in once and repeatedly tagged common swifts (Apus apus), a long-distance migratory bird

Movement Ecology, 2022
Background To understand life-history strategies in migratory bird species, we should focus on migration behaviour and possible carry-over effects on both population and individual level.
Arndt H. J. Wellbrock, Klaudia Witte
doaj   +1 more source

Insect ectoparasites on wild birds in the Czech Republic during the pre-breeding period

Parasite, 2011
Wild passerine birds (Passeriformes) from the northeastern part of the Czech Republic were examined for ectoparasites during the pre-breeding period in 2007. Two species of fleas of the genera Ceratophyllus and Dasypsyllus (Siphonaptera: Ceratophyllidae),
Sychra O., Literák I., Podzemný P., Harmat P., Hrabák R.   +4 more
doaj   +1 more source

Bobolink (Dolichonyx oryzivorus) Declines Follow Bison (Bison bison) Reintroduction on Private Conservation Grasslands

Animals, 2021
Among the most rapidly declining birds in continental North America, grassland birds evolved with American bison (Bison bison) until bison nearly became extinct due to overhunting.
Rachel H. Kaplan, Kristen M. Rosamond, Sandra Goded, Alaaeldin Soultan, Alex Glass, Daniel H. Kim, Nico Arcilla   +6 more
doaj   +1 more source

Preferred Habitat of Breeding Birds May Be Compromised by Climate Change: Unexpected Effects of an Exceptionally Cold, Wet Spring

PLoS ONE, 2013
Previous studies of the consequences for breeding birds of climate change have explored how their populations may respond to increasing temperatures.
M. Whitehouse, N. Harrison, J. Mackenzie, S. Hinsley   +3 more
semanticscholar   +1 more source

High daily energy expenditure of incubating shorebirds on High Arctic tundra: a circumpolar study [PDF]

, 2003
1. Given the allometric scaling of thermoregulatory capacity in birds, and the cold and exposed Arctic environment, it was predicted that Arctic-breeding shorebirds should incur high costs during incubation.
Amat, Andreev, Cartar, Castro, Drent, Drent, G. H. Visser, Gessaman, Grönlund, Grönlund, H. Schekkerman, Hammond, Hicklin, Hötker, I. Tulp, J. Jukema, J. Reneerkens, Kersten, Kersten, Kirkwood, Lifson, Morrison, Morrison, Morrison, Nagy, Piersma, Piersma, R. H. Drent, R. I. G. Morrison, Schekkerman, Speakman, T. Piersma, Tatner, Tinbergen, Tulp, Verboven, Visser, Wiersma, Å. Lindström   +38 more
core   +4 more sources

Neuroendocrine regulation of gonadotropin secretion in seasonally breeding birds

Frontiers in Neuroscience, 2013
Seasonally breeding birds detect environmental signals, such as light, temperature, food availability, and presence of mates to time reproduction. Hypothalamic neurons integrate external and internal signals, and regulate reproduction by releasing ...
T. Ubuka, G. Bentley, K. Tsutsui
semanticscholar   +1 more source

Geographic variation in morphometrics, molt, and migration suggests ongoing subspeciation in Pacific Golden-Plovers (Pluvialis fulva) [PDF]

, 2015
Breeding Pacific Golden-Plovers (Pluvialis fulva) cover 140 longitudinal degrees of Arctic tundra. Having examined 557 museum skins from across this huge distributional range, we conclude that Pacific Golden-Plovers breeding in Alaska are structurally ...
Jukema, J., Piersma, T., Van Rhijn, J.G.
core   +1 more source

Massachusetts Breeding Bird Atlas [PDF]

The Auk, 2005
Abstract The following critiques express the opinions of the individual evaluators regarding the strengths, weaknesses, and value of the books they review. As such, the appraisals are subjective assessments and do not necessarily reflect the opinions of the editors or any official policy of the American Ornithologists’ Union.
openaire   +1 more source

Annual migratory movement, apparent molt-migration, migration schedule, and diffuse migratory connectivity of Hermit Warblers

Avian Conservation and Ecology
Quantifying migratory connectivity and annual movement is key to sound conservation planning for migratory species. Hermit Warblers ( Setophaga occidentalis ) are an endemic-breeding species in the Pacific Northwest that winters in Mexico and the Central
Hankyu Kim, Rodney B. Siegel, Jaime L Stephens, Joan C. Hagar, Brett J Furnas, Min-Su Jeong, Brenda C. McComb, Matthew G. Betts   +7 more
doaj   +1 more source

An approach to the effects of longevity, sexual maturity, and reproduction on telomere length and oxidative stress in different Psittacidae species

Frontiers in Genetics, 2023
Introduction: Aging is a multifactorial process that includes molecular changes such as telomere shortening. Telomeres shorten progressively with age in vertebrates, and their shortening rate has a significant role in determining the lifespan of a ...
Angélica Domínguez-de-Barros, Inés Sifaoui, Zuzanna Borecka, Roberto Dorta-Guerra, Roberto Dorta-Guerra, Jacob Lorenzo-Morales, Jacob Lorenzo-Morales, Jacob Lorenzo-Morales, Rafael Castro-Fuentes, Elizabeth Córdoba-Lanús, Elizabeth Córdoba-Lanús   +10 more
doaj   +1 more source