A pigheaded compromise: do competition and predation explain variation in warthog group size?

The reproductive payoff to an individual for participating in a group will often be affected by the size of the group. Competition for resources and predation pressure are 2 primary factors that influence sociality and group size in a variety of species. In this correlative study, I investigated how resource competition and predation influenced group […]

Ultraviolet vision and foraging in dip and plunge diving birds

Many fishes are sensitive to ultraviolet (UV) light and display UV markings during courtship. As UV scatters more than longer wavelengths of light, these signals are only effective at short distances, reducing the risk of detection by swimming predators. Such underwater scattering will be insignificant for dip and plunge diving birds, which prey on fishes […]