The breeding densities of many bird-species which nest in tree cavities are in some areas
limited by shortage of sites. This is evident from circumstantial evidence in which the …

This book meets the demand for a comprehensive introduction to understanding the
processes of population limitation. Recognized world-wide as a respected biologist and …

In most animals, offspring from a reproductive bout usually hatch, emerge, or are born within
a relatively short time of each other compared to the time required for their development …

There is a large and growing number of alien species in ecosystems all over the world. In
view of this, management efforts should concentrate on invasives that have detrimental …

Latitudinal variation in avian demography played an important early role in the development
of life history theory, especially in the idea of a cost of reproduction. Recent attempts to …

In some places of the northeastern Peruvian Amazon the harvesting and local trade of parrot
nestlings is still a common practice (loreada) that takes place every year between February …

Psittacidae (parrots) have the most threatened species of any bird family in the world. Most
parrots are obligate secondary cavity nesters, and can be limited in their breeding success …

The world is facing a biodiversity crisis as a result of human activities, with current
predictions suggesting we may lose one quarter of all vertebrate species within the next …

Aves da Serra dos Órgãos, Estado do Rio de Janeiro, sudeste do Brasil: uma revisão. É feita
uma revisão da avifauna da Serra dos Órgãos, baseada em pesquisa na literatura …

We studied the breeding behavior of Green-rumped Parrotlets (Forpus passerinus) using
nest boxes in the llanos of Venezuela. Aggressive and courtship displays, and nest …