Two migratory bird walks will take place at the Orono Bog Boardwalk at 7 a.m. on May 13 and 20. Adrienne Leppold, state songbird specialist with the Maine Department of Inland Fisheries & Wildlife and UMaine alumna, will lead the first bird walk on May 13. Brian Olsen, professor of ornithology at the UMaine School read more Migratory bird walks to be held at Orono Bog Boardwalk May 13 and 20