Bellbirds, therefore, might respond adaptively to the increased risk of predation by novel predators by lowering parental activity, increasing length of incubation on-bouts, and shortening incubation periods.
These results demonstrate that some island birds are able to respond to increased risk of predation by novel predators in ways that appear adaptive.
Indeed, the decreasing of activity reduces the probability of being detected or encountered by a predator, therefore limiting the risk of predation [2], [7].
Across the animal kingdom, risk of predation has led to the evolution of anti-predator defenses.
Associating with conspicuous males, however, might increase a female's risk of predation because of conspicuous males' higher probability of attracting predators.
Additionally, conspicuousness would seem to increase an amphibian's risk of predation, but evolving this trait actually protects the lineage from extinction.
Risk of predation may be exaggerated in these areas.
But the patterns also increased the risk of predation.
The problem is complicated by a variable risk of predation.
Food hoarding is an adaptive behavior that functions to reduce the risk of predation.
Alternatively, remaining too close to wetlands may pose some disadvantage, such as greater risk of predation (Licht 1974 , 1986.
