Ecological Adaptations for Breeding in Birds

TL;DR: Interspecific variation in the rates and patterns of nest predation in this study, coupled with reports of high rates of nest loss at temperate latitudes, lead us to question long standing assumptions about latitudinal trends in rates of nests loss.

TL;DR: In this article, the optimal foraging strategy for a parent bird that is feeding its young is investigated, on the basis of a time budget and an energy budget for the parent, a currency for assessing foraging strategies is derived.

TL;DR: Demography is the study of the life tables of populations which summarize probabilities of survival and rates of fecundity of individuals at each age, and life-table parameters vary greatly within populations according to season, year, and individual differences.

TL;DR: Density manipulation experiments performed in populations of guppies from low‐predation environments to ask whether natural populations normally experience density regulation and, if so, to characterize the short‐term demographic changes that underlie density regulation reveal that these populations are density regulated.