Frozen
Dinners!
Imagine trying
to eat a frozen pizza while it was still frozen! It wouldn't have that appetizing
aroma or soft melted cheese. It would be cold, hard, and tasteless. Now
imagine you're a chickadee or a robin spending your winter in the far north.
You can't cook your meals. How would you survive?
First
Course: Fruit
In winter, robins eat a lot of frozen fruit. They prefer fruits small
enough to swallow whole, such as mountain ash and other berries and small
crabapples.
Second
Course: Insects
Whether it's summer or winter, birds appreciate protein. When the upper
ground is snow-covered and frozen, it's hard to dig for worms. How might
birds get protein in winter? One of the best sources is insects. But how
can there possibly be enough bugs to eat in the frozen north in the middle
of winter? Where are the insects? Do they hibernate? where do they hide?
What would it feel like to be an insect or other cold-blooded creature
in coldest winter? Let's find out!
What
to Drink with Dinner?
Even in the coldest winter, animals need water to survive. Birds
are luckier than mammals, because most birds don't waste as much water
as mammals. Mammals lose more water than birds by breathing out lots of
steam, sometimes losing water in sweat, and excreting a lot of water in
their urine. So birds are better than mammals at conserving water.
Birds don't waste a lot of water, but they still need to drink some—even
during deep freezes. How do birds get water? Find out five water sources—and
one BIG danger?!
Try
This! Journaling Questions
- Why do
you think robins might prefer eating small berries to big chunks of
other fruits? Give at least two reasons.
- If insects
can produce enough antifreeze in their tissues to stay alive and even
active when the temperature is below freezing, why is it still hard
for them to lead normal lives?
- Where
do birds get water to drink in winter? What dangers are connected with
birds' water supply? What do you think would be the hardest thing
about being a bird in winter?
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2004 Journey North. All Rights Reserved.
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