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Comparing
Migrations
Why Do Rufous Hummingbirds
Seem Far Ahead?
Many people are surprised when they look closely at North America's
climate patterns. It can be warmer on the coast of Washington state
— or even in parts of Alaska — than it is much farther
south! Here's why:
The
Wonders of Water
Winter and spring temperatures tend to be warmer along the coasts
than they are inland at the same latitudes. This is because water
holds heat longer than land does. Because average winter temperatures
near oceans are warmer, spring events occur earlier in those areas.
- Think!
Does this mean that spring moves north FIRST along
the COASTS? Keep your eyes on Journey North maps in the weeks
ahead!
So
why does the West coast have warmer winter temperatures, on average,
than the East coast does? Read on . . .
Wind
and Temperatures
Our Pacific Coast usually has warmer temperatures because most winds
come from the west over mild Pacific waters. But winds heading toward
the East coast come across colder inland regions.
Think
and Journal!
What do Rufous hummingbirds need to survive? How
might warmer temperatures influence their ability to meet their
needs? (Hint: Think about how temperatures affect
hummingbird food sources!)
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