
I've recently read on the PABIRDS email list that there are rising spruce budworm populations in the eastern Canadian boreal forests, on which these warblers feed. So Cape May and Bay-breasted Warblers, known as "spruce budworm specialists," should be more abundant, and will be on my 'to-hear' list this August and September for 'Lifer' birds, first time for me to try to hear or see them. And since they are so hard to see, I'm planning on listening to online recordings of these birds throughout the summer to try to memorize their calls so that I will be prepared. An excellent resource about birds with many online recordings is www.allaboutbirds.org/Page.aspx?pid=1189
Douglas Bauman