Life-history traits in wild populations are often regarded as being subject to directional
selection, and the existence of substantial variation and microevolutionary stasis of these …

Lead (Pb) poisoning is most commonly linked amongst anthropogenically-caused deaths in
waterfowl and this is often associated with hunting and fishing activities. However, the exact …

The knowledge of the correct morphological and biochemical parameters in mute swans is
an important indicator of their health status, body condition, adaptation to habitat and useful …

Relationships between birds and habitat can be very tight. Without prior local knowledge,
experienced birdwatchers often correctly predict occurrence of individual bird species in a …

Lead (Pb) is a highly toxic pollutant and represents a serious threat to wildlife, affecting
various systems in animal bodies. Especially prone to Pb poisoning are waterbirds, which …

To further our understanding of invasive species' novel distributions, knowledge of invasive
species' relationships with environmental variables at multiple spatial scales is paramount …

The warming climate is giving migratory birds new opportunities to extend their breeding
ranges. These expansions may have a significant impact on other local bird communities …

Sexual selection theory predicts that sexually selected ornaments are costly to maintain and,
as condition‐dependent signals, are likely to vary in attractiveness with season and age …

Adam Zbyryt–mgr, pracuje w Polskim Towarzystwie Ochrony Ptaków jako koordynator
projektu LIFE+„Ochrona orlika krzykliwego na wybranych obszarach Natura 2000” w …

We tested wild birds in Poland during 2008–15 for avian influenza virus (AIV). We took
10,312 swabs and feces samples from 6,314 live birds representing 12 orders and 84 bird …