[obol] 2 questions

[Seth Reams]

We have seen (recently) the Red-Breasted Sapsucker and the Townsend's Warbler. My questions are, how do you tell if they are a hybrid or not? And are there any definite markings that prove them to be hybrids? Thanks in advance. 
   
  Seth and Michelle
  NE Portland - Gateway area

       
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