The uropygial gland is a holocrine complex exclusive to birds that produces an oleaginous
secretion (preen oil) whose function is still debated. Herein, I examine critically the evidence …

Smell is a sensory modality that is rarely considered in birds, but evidence is mounting that
olfaction is an important aspect of avian behaviour and ecology. The uropygial gland …

The first comprehensive review of all aspects of the biology of moult, drawing information
from across the literature and in all birds, from penguins to passerines. Feathers are …

Animals frequently use metabolites produced by symbiotic bacteria as agents against
pathogens and parasites. Secretions from the preen gland of birds are used for this purpose …

BIRDS EмIт мANҮ chemical compounds, though ornithologists rarely consider them. Avian
odors, for example, are readily detectable to humans in at least 17 avian orders and 80 …

Although a growing body of evidence supports that olfaction based on chemical compounds
emitted by birds may play a role in individual recognition, the possible role of chemical cues …

The uropygial gland (preen gland) is a holocrine secretory gland situated at the base of the
tail in birds which produces a hydrophobic fatty secretion. In certain birds, such as the …

I review the evidence that organisms have adaptations that confer difficulty of detection by
predators and parasites that seek their targets primarily using sensory systems other than …

Until the second half of the 20th century, it was broadly accepted that most birds are
microsmatic if not anosmic and unable to detect and use olfactory information. Exceptions …

Effective conservation of endangered species requires a solid understanding of the
demographic causes of population change. Bird populations breeding on agricultural …