Results 161 to 170 of about 39,040 (293)
Ecology and Evolution, Volume 16, Issue 3, March 2026.We experimentally supplemented great tit nestlings with methionine, leucine, or tap water to test how essential amino acids influence growth and immune function in forest and suburban habitats. Supplementation increased mass gain in smaller forest nestlings and enhanced lysis activity with methionine in suburban populations.
Ashetu Debelo Terefa +3 more
wiley +1 more source
Oxidative costs of migration: infections as an added burden
Journal of Avian Biology, Volume 2026, Issue 2, March 2026.There is increasing evidence that over‐production of reactive species (RS) constitutes a significant physiological cost for migrating birds. The current view entails that RS during migration originate primarily from increased metabolic activity associated with prolonged flights and refueling.
Michael Tobler +5 more
wiley +1 more source
Variation in seed abundance predicts yolk fatty acid composition in a wild population of birds
Journal of Avian Biology, Volume 2026, Issue 2, March 2026.Bird embryos develop inside eggs, which contain maternal substances that can shape offspring phenotype and fitness. Yolk fatty acids are a key energy source for the developing embryo, with omega‐6 (ω‐6) and omega‐3 (ω‐3) polyunsaturated fatty acids (PUFAs) obtained exclusively from the diet.
Lucia Mentesana +4 more
wiley +1 more source
Inter‐ and intra‐individual variation in the feather coloration of American crows
Journal of Avian Biology, Volume 2026, Issue 2, March 2026.Avian feathers are remarkably diverse in both form and function. Coloration is among the most studied feature of feathers, but we know relatively little about melanin‐based black coloration. Despite many crows (Corvus sp.) and other corvids having black feathers that appear uniform to human perception, their feather coloration could play an important ...
Jessica L. Yorzinski, Anne B. Clark
wiley +1 more source
PATERNAL GENETIC EFFECTS ON OFFSPRING FITNESS ARE CONTEXT DEPENDENT: WITHIN THE EXTRAPAIR MATING SYSTEM OF A SOCIALLY: MONOGAMOUS PASSERINE [PDF]
, 2005 Tim Schmoll +5 more
openalex +1 more source
New Zealand Journal of Zoology, Volume 53, Issue 1, March 2026.Dolomedes schauinslandi Simon 1899 is a large fishing spiderspecies endemic to the Chatham Islands, New Zealand. Today, it only occurs on remote offshore islands, being extinct from most islands of the archipelago. Unusual for a fishing spider, D. schauinslandi has evolved a terrestrial lifestyle, inhabiting forests and feeding predominantly on cave ...
Zita Roithmair, Christina J. Painting
wiley +1 more source
Timing and pattern of the post‐breeding migration of some species of passerines through Lombardy, Northern Italy [PDF]
, 1986 Mia Schubert +2 more
openalex +1 more source
Beyond the Lab: Cognitive Neuroscience in Real‐World Contexts
WIREs Cognitive Science, Volume 17, Issue 2, March/April 2026.Cognitive neuroscience often assumes that using laboratory animals, model species, and digital simulations enables generalizations from lab to wild, from animals to humans, and from virtual to physical. We challenge these assumptions and call for refining ecological validity along three dimensions: subject phenotype, task naturalness, and environmental
Stephan P. Kaufhold +3 more
wiley +1 more source
Wildlife Society Bulletin, Volume 50, Issue 1, March 2026.Energized fences were effective at reducing black bear damage to bird feeders. The fences were 100% effective in a good natural bear food year and 77% effective in a poor natural bear food year. When bears breached the fences, the cause was typically poor electrical grounding.
Hannah J. Leeper, Andrew N. Tri
wiley +1 more source