Cacique unique nest for protecting it's young

A picture of cacique nest.

Protective measures

The cacique bird of Central America has a way of protecting its young that even the most intelligent human would find a test of his brain power.

Forest cats, giant lizards and raccoonlike animals all could easily raid the caciques’ nests, even those built high in the trees. 

But these birds foil their enemies by enlisting the help of an ally, without the ally’s invitation. 

They build a colony of nests, often 50 or more, on a single branch of a large tree.

A cacique colony of nests.

They also select a branch that holds a large nest of tropical wasps. 

The wasps do not seem to be annoyed by the nests, or by the activities of the birds, but woe to the intruder that tries to reach the nests!