Heard Singing 04/01/08 |
Average Temperatures March 23-29, 2008
What's the pattern?
age-old theory about robin migration says that robins arrive
in an area when the average temperature is 36 degree F. Is it
color on the temperature map outlines the areas where it is
- Imagine the lines continuing up into Canada.
Would the 30-40° color
band include the blue sightings in central Canada?
do you predict the maps will look like in 2 weeks?
you think the theory about migration holds true this week?
Journey North 2008