IL Audubon Society held their annual meeting in Rockford (at Cliffbreakers) last weekend. They arranged field trips to a wide variety of local birding spots. Saturday (Sep 22) I led a group of ten birders from the IAS on a bird walk at Anna Page Park. We had a gorgeous morning. In addition to the expected and common birds we also saw a Yellow-billed Cuckoo, Scarlet Tanager, Vesper Sparrow, Indigo Bunting, a handful of different warblers and a minimum of six Philadelphia Vireos. I think there were a few more that got away from us. It must have been a peak migration day for Philadelphia Vireos.