Menu
The Cornell Lab
The Cornell Lab

The Cornell Lab of Ornithology builds the eBird global platform for communities and partners around the world to advance data-driven science, education, and conservation.

Change Region

Change Region

Berks

Map

Explore...

eBirders

Updated ~15 hours ago

Custom Time Period

Change Time Period

Checklist Leaders

  • 1.
    Ada Bailey
    65
  • 2.
    Greg George
    56
  • 3.
    Kerry Grim
    54
  • 4.
    Rudolph Keller
    47
  • 5.
    Hannah Salvatore
    37
  • 6.
    Nelson Weber
    28
  • 7.
    Helen Weaver
    27
  • 8.
    Russell Hoffman
    24
  • 9.
    Ernest Bashore
    23
  • 10.
    Brian Lineaweaver
    20

Species Leaders

  • 1.
    Rudolph Keller
    101
  • 2.
    Brian Lineaweaver
    90
  • 3.
    Kerry Grim
    88
  • 4.
    Russell Hoffman
    78
  • 4.
    Andy Wlasniewski
    78
  • 6.
    Linda Ingram
    74
  • 7.
    Jo Spilde
    73
  • 8.
    Todd Underwood
    72
  • 9.
    Ada Bailey
    67
  • 9.
    Nelson Weber
    67