The martyrdom of Franciscan priest Maximilian Kolbe, assassinated in the Nazi concentration camp in Auschwitz, is represented in the Polish film Maximilian Kolbe: martyr of charity (1991) and in the Brazilian play The birds ...

One of the least known aspects of the biology of diurnal birds is their nocturnal behavior, which limits our knowledge on their circadian cycles and total home ranges. We studied the nocturnal behavior of the Pale-breasted ...

We report on the intra-Amazonian migration of a pair of Orinoco Geese (Neochen jubata) from Manú National Park, Peru. The species is Critically Endangered in Peru, so a major aim of the study was to aid conservation planning ...

Background. A scarcely studied consequence of urbanization is the effect of temporal stabilization of the environment on bird communities. This alteration is thought to dampen environmental variations between day and night, ...

Nectar-feeding birds oscillate between avoiding overhydration when they are feeding and preventing dehydration during fasts. Here, we examined how resting rates of total evaporative water loss (TEWL) and metabolic water ...