Female birds can change egg contents based on social status, the qualities of dad, and in response to environmental factors. For example, when population density
Moms can employ a number of strategies to ensure that their young are adequately fed during their first few months of life. Many of these
In addition to manipulating their eggs based on the qualities of dad, bird moms can also alter egg allocation levels based on the social system.
We’ve discussed how environmental cues can be just as important as direct sexual signals. What happens when the environment is altered in such a way
As well as being required to make reliable assessments about sexual partners based on their physical and behavioural characteristics, animals (humans included) need to have
