Backyard Birding class at CT Audubon Center

I've signed up for this free one hour class at the CT Audubon Center on Burr St in Fairfield. One of the things it mentions is learning to tell the difference between a house and purple finch, and this is something I really want to know! I do believe a purple finch was at the bird feeder this morning.It was beautiful!

Introduction to Backyard Birding with Scott Kruitbosch