May 14th is Global Big Day! Join Wissahickon Valley Watershed Association for a walk at Willow Lake Farm, which serves as important stopover habitat for many beautiful species migrating through. As participants walk, they'll compile a checklist of the birds they see and hear for submission to eBird, the Cornell Lab of Ornithology's database. On Gobal Big Day (GBD), birders worldwide submit checklists to eBird in an effort to contribute to global bird conservation.

For more about GBD, click here.

• Free; registration not required
• Willow Lake Farm - off Butler Pike or Skippack Pike in Broad Axe, at the rear of the CVS