Second Atlas of Breeding Birds in Pennsylvania: A Review by an Atlas Novice
10,000 Birds
APRIL 2, 2013
Brauning, a Summary of Atlas Results by Physiographic Region and Section, Breeding Phenology (date ranges of nest building, nest with eggs, nest with young, fledged young), Atlas Safe Dates (the period of time within which it is safe to say that if you saw or heard a bird in suitable habitat it is likely breeding, ruling out migrants).
220 
Let's personalize your content