Parents affect offspring fitness by propagule size and quality, selection of oviposition site,
quality of incubation, feeding of dependent young, and their defence against predators and …

Birds are a particularly good group with which to examine the importance of maternal effects,
as parental contributions can be relatively easily quantified compared with other groups …

This article explores factors that shape population structure in novel environments that have
received scant theoretical attention: cities. Urban bird populations exhibit higher densities …

Although factors influencing androgen deposition in the avian egg and its effects on nestling
fitness are recently receiving considerable attention, little is known about the potential costs …

Female birds have repeatedly been reported to adjust the primary sex ratio of their offspring
to environmental, social and physiological cues. However, the mechanism behind sex …

For some precocial bird species, vocal interactions occur pre-hatching between parent and
embryo within the egg. Such prenatal sensory experiences may affect development and …

The zebra finch is the model species for the study of the evolution of birdsong, female song
preferences, song learning and the neural processes underlying song learning and …

The present study was carried out to determine the sex of the fertilized white layer eggs with
using morphological measurements. A total of 300 Super Nick White Layer (54 wks of age) …

Hatching asynchrony is widespread in birds laying clutches containing multiple eggs, yet is
seemingly paradoxical as the age and size hierarchies result in asymmetric sibling …

Although the zebra finch, Taeniopygia guttata, has been a very important model system for
the study of intrafamilial conflict and parental strategies, a detailed understanding of the …