Changing Chickadees

Recorded from Autumn 2015 Lecture by Dr. Robert Curry at Hawk Mountain.

For more than 15 years, Dr. Curry and his students have studied hybridization between Black-capped and Carolina chickadees in southeastern Pennsylvania, aided by important collaborative contributions recently from Cornell ornithologists. 

Intensive field studies at 4 sites including Hawk Mountain, combined with analysis of genetic data and eBird observations, have revealed rapid northward movement of Carolina chickadees and hybrids, and the retreat of black-capped chickadees in patterns closely associated with climatic trends. 

Dr. Curry will review findings and unresolved questions, and will discuss the study's relevance for helping us understand the broader effects of climate change on biodiversity.