Page 85 - One Million Things: Animal Life - The Incredible Visual Guide

Finished
web now LEAPING SALMON
ready to After hatching in streams and rivers, then migrating out
trap insects to sea for years of feeding, salmon instinctively return to
where they came from in order to breed. So strong is the
drive to breed that salmon will leap up and over rapids
and waterfalls to reach their destination.

BIRDS NESTING
Most species of birds, such as these black-headed
weavers, know instinctively how to build the nests
in which they incubate eggs and feed their young.
In the case of weavers, male birds weave the nests
and use them as a way of attracting females.

DIGGER WASP CICADA CYCLE
A female digger wasp uses built- Nymphs (juvenile stages) of the
in behaviors to excavate a nest periodical cicada spend 17 years
hole in the ground and provide its feeding underground. Then they
young with food. The wasp stings emerge above ground in their
and paralyzes a caterpillar, drags it millions, become adult, mate,
into the nest, and lays her eggs in and die. Their offspring burrow
it. When they hatch, her offspring into the soil, where they remain
feed on the still-living prey. for the next 17 years.

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