Journal ArticleDOI
State-dependent incubation behaviour in the zebra finch
Helen E. Gorman,Ruedi G. Nager +1 more
TLDR
It is suggested that only females in good condition can afford to adopt a strategy of increasing bout length early in incubation; females in poorer condition first have to recover their body condition after having produced a clutch.About:
This article is published in Animal Behaviour.The article was published on 2003-04-01. It has received 51 citations till now. The article focuses on the topics: Incubation & Zebra finch.read more
Citations
More filters
Journal ArticleDOI
The evolution of thermal physiology in ectotherms
TL;DR: This review applies classical models of thermal adaptation to predict variation in body temperature within and among populations of mammals and birds and relates these predictions to observations generated by comparative and experimental studies.
Journal ArticleDOI
Corticosterone and time-activity budget: an experiment with Black-legged kittiwakes.
TL;DR: In Black-legged kittiwakes, body condition and corticosterone levels can interact to mediate foraging decisions and possibly energy allocation: when facing stressful environmental conditions, birds in good body condition may afford to increase the time spent foraging probably to maintain brood provisioning, whereas poor body condition birds seemed rather to redirect available energy from reproduction to self-maintenance.
Journal ArticleDOI
Prenatal developmental conditions have long–term effects on offspring fecundity
Helen E. Gorman,Ruedi G. Nager +1 more
TL;DR: A protein–rich diet prior to laying improved maternal body weight prior to breeding compared with birds on a protein–poor diet and gave rise to offspring with lower fecundity than offspring from birds in a better nutritional state.
Journal ArticleDOI
Individual quality and age affect responses to an energetic constraint in a cavity-nesting bird
TL;DR: There was a trade-off between investing in incubation and maintaining parental condition, but among individuals, there was a positive correlation between change in parental condition and offspring quality, and a strong individual quality effect.
Journal ArticleDOI
Sex-specific patterns of yolk androgen allocation depend on maternal diet in the zebra finch
TL;DR: The data suggest that there are complex, context-dependent mechanisms of sex-specific androgen allocation in this species, and this species' predicted to adjust their reproductive investment in relation to resource quality.
References
More filters
Journal ArticleDOI
The evolution of life histories
TL;DR: In this article, age and size at maturity at maturity number and size of offspring Reproductive lifespan and ageing are discussed. But the authors focus on the effects of age and stage structure on fertility.
Book
The evolution of life histories : theory and analysis
TL;DR: This chapter discusses life history variations, the age schedules of birth and death, the cost of reproduction, and the size of clutch and offspring size.
Journal ArticleDOI
Unrepeatable repeatabilities: a common mistake
C. M. Lessells,Peter T. Boag +1 more
TL;DR: The correct calculation of repeatability is outlined, a common mistake is pointed out, how the incorrectly calculated value relates to repeatable values is shown, and a method for checking published values and calculating approximate repeatability values from the F ratio is provided.
Journal ArticleDOI
The prudent parent: Energetic adjustments in avian breeding
Rh Drent,Serge Daan +1 more
TL;DR: In this paper, the parent adjusts its effort in relation to prevailing environmental conditions in order to maximize the output of young in its lifetime, rather than measurable in terms of adult survival and recruitment of young.