In the face of challenges, animals must balance investments in reproductive effort versus
their own survival. Physiologically, this trade-off may be mediated by glucocorticoid release …

Parental care has attracted attention from both proximate and ultimate perspectives. While
understanding the adaptive significance of care has been the focus of work in diverse …

Obligate brood-parasitic birds never build nests, incubate eggs or supply nestlings with food
or protection. Instead, they leave their eggs in nests of other species and rely on host …

Brood parasite-host interactions are among the most easily observable and amenable
natural laboratories of antagonistic coevolution, and as such have intrigued evolutionary …

Mothers, fathers, and offspring regularly clash over how much care offspring receive.
Offspring beg to solicit for more resources—but how much begging is rewarded can depend …