THIS TRIP IS FULL.  WAITLIST ONLY.  Morning walk through the varied habitats of this excellent 250-acre park, including two ponds, fields, and deciduous and coniferous woods. We’ll be looking for overwintering songbirds, waterfowl, and raptors. Meet at 8 a.m. in the parking lot at 8711 Snouffer School Road, Gaithersburg, Md. Limit: 12. LEADER: Mark England at [email protected].