Highlights•Parents should only partially compensate for a reduction in care by the partner.•
Compensatory responses could differ according to parental tasks.•Widowed parents partially …

Cooperative breeding allows the costs of parental care to be shared, but as groups become
larger, such benefits often decline as competition increases and group cohesion breaks …

Highlights•We examined ecological drivers of stability of degu social foraging groups.•Food
availability, predation risk, opposite-sex ratio and season influenced stability.•Foraging …

The presence of bystanders can influence the behavior of a forager, which has mainly been
studied in primates and birds. We tested the effect of the absence and presence of an …