Join Dr. Strassmann in getting to know the most common birds, not just by sight, but by behavior.THURSDAY, JULY 18Slow Birding7:00–8:30 PM Joan E. Strassmann, Ph.D.Professor of Biology, Washington University in St. Louis and Author of Slow Birding Sponsored by Jenkins Arboretum & Gardens + Tredyffrin Public Library's Arbo-READ-um partnershipIn the heart of migration, it is easy to jump from one bird to the next, tallying counts of warblers, vireos, tanagers, and thrushes with increasing speed. But …