Wednesday, February 18, 2015

Spring has begun!

Increasing daylength kicks in reproductive behaviors for some resident birds. This morning, despite it being -17 C and snow everywhere, was filled with singing birds.

I heard

Cardinals - two males calling (whip whip whip brrrrrrr)
Song Sparrow
House Finches

There are anatomical and physiological changes occurring that are driving these behaviors - and that is for another post.  

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