| Climate
Makes a Difference
The climate along the migration routes also plays a big role. This
map shows average coldest temperatures.
- What
are the coldest temperatures near the coast where the rufous hummingbirds
are migrating? Where the rubythroats are migrating?
- Draw
an imaginary line across the map, from west to east, starting
at the northern edge of the rufous migration. Can you explain
why the rubythroats are not yet as far north as the rufous hummers?
- Read
on to see what scientists think.
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