[cobirds] Bird Call Puzzle/Nunn

We heard a bird (could not find it to view) last night in yard that I
could not identify. It made repeated "ree ree ree ree"-style call
from our evergreens. I'm familiar with lots of calls especially local
ones and don't recall hearing this pattern before in area.

Any ideas?

Thanks Gary Lefko, Nunn
http://coloradobirder.ning.com/
Mobile: http://coloradobirder.ning.com/m

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