Despite intense predation pressure on eggs and larvae, the male's guarding behavior extends for only one or two days after hatching.

Evergreens suffer greater water loss during the winter and they also can experience greater predation pressure, especially when small.

A consideration of taxon longevity appears to support an increase in predation pressure around this time.

They are obviously tied into two important aspects of the bird's environment: food availability and predation pressure...

They survive today in deep waters, where predation pressure is reduced.

They have less predation pressure than ground-dwelling mammals.

Slow reproduction is a part of the species biology, and cannot be changed in one generation based on sudden predation pressure.

This will cause the predator population to dip, decreasing the predation pressure on the prey population.

This is due to lower predation pressures that would otherwise kill off many of the individuals with significant parasite loads.

It may also differ within the same species due to many factors including habitat, health, nutrition, predation pressures, and time of year.