A trait such as plumage coloration in finches has
causes such as
The female mate choice behavior in turn has an
cause in the male's
Proximate factors affecting behavior include the following.
produced by the
system, such as
can affect both the
of a behavioral response.
system affects faster behavioral responses via nerve
which control either the release of hormones or the action of
Some birds are capable of
as an antipredator strategy.
Variations at the
level, such as genes and
contribute the most fundamental factors affecting behavior.
Environmental factors also affect behavior: nest
plays a proximate role in sex
in many reptiles.
enables an animal to adjust its behavior to its environment, and requires a