Life history theory suggests that animals should balance their current investment in young
against their chances to reproduce in the future. One fundamental prediction from the theory …

Co–occurrence in food requirements of offspring and food availability is a key factor
determining breeding success. Prey availability is typically dependent on environmental …

The provisioning parameters, breeding success, adult mass, and survival of yellow-nosed
albatrosses were studied over 7 successive years at Amsterdam Island, southern Indian …

Long‐lived species are expected to reduce their current reproductive effort in adverse
conditions in order not to jeopardize their future reproduction. Parasitic Jaegers …

Simultaneous estimation of survival, reproduction, and movement is essential to
understanding how species maximize lifetime reproduction in environments that vary across …

Summary 1 In long‐lived species, such as seabirds, the allocation of resources between self‐
maintenance and reproduction is of particular interest because only a small reduction in …

Animals modulate breeding effort by balancing investment in self-maintenance against
investment in their young, potentially impacting reproductive success when faced with …

Sex allocation theory predicts that mothers in good condition should bias their brood sex
ratio in response to the differential benefits obtained from increased maternal expenditure in …

Diet‐related breeding failure in seabirds has been attributed to declines in key prey
abundance, the quality of prey and overall prey availability. However, identifying which …

Males commonly face a trade-off between investment in offspring care and time spent
seeking additional breeding opportunities. Although this trade-off is central to our …