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Birds have a lot to do in their short lives: defend territories, build nests, raise chicks and feed themselves. But the toll of these activities may be greater for female birds than for male birds.

In an experimental brood-size manipulation in Alpine swifts, smaller nestlings were selectively lost during growth, eliminating treatment differences in adult size, yet individuals from enlarged broo...

In an experimental brood-size manipulation in Alpine swifts, smaller nestlings were selectively lost during growth, eliminating treatment differences in adult size, yet individuals from enlarged broo...

Despite technological advances in both tracking and sequencing technologies, finding the genetic mechanisms behind migratory traits remains a challenge. Recent studies have shown that migratory direc...

Winter at high elevations challenges resident species such as the White-winged Snowfinch. Circannual-regulated fat accumulation, along with flexible and sex-specific movement strategies, likely play ...

Mückenfledermäuse haben ein Problem mit Elektrosmog. Eine Studie zeigt jetzt, was das für Auswirkungen auf das Verhalten der Tiere hat.

Changes in phenology buffer against climate change by ensuring breeding at temperatures that maximize reproductive success.

Life-history theory predicts a trade-off between allocation of resources to reproduction or self-maintenance, yet how environmental variability shapes this trade-off remains poorly understood. We sho...

Subscription and open access journals from Sage, the world's leading independent academic publisher.

Subscription and open access journals from Sage, the world's leading independent academic publisher.

The Swiss Ornithological Institute in Sempach is a non-profit foundation for ornithology and bird conservation. It monitors native bird life, researches their habits, and campaigns for endangered bird...

Parasites are ubiquitous and exert varied ecological and evolutionary pressures on their hosts. Yet, characterising parasite diversity and distributio…

PDF | Studying the timing of the seasonal movements of migratory birds, known as migration phenology, is crucial for managing and conserving migratory... | Find, read and cite all the research you nee...