1.
Use a marker to draw a line along the leading edge of the rubythroat
migration last week (March 31).
2.
Now try putting last week's line onto the same place on this week's
map (April 7).
3.
What do you notice about the yellow dot pattern (sightings after
March 28) above AND below the line you just drew. Describe what
you see.
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4.
Study the weather maps. What do you notice about the bands of color
(temperature isotherms). Do you see a pattern between temperature
and migration? How would you describe it?
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