Ken Zirkel: Red-bellied woodpecker
Ken Zirkel: Nuthatch buddies
Ken Zirkel: Song Sparrow
Ken Zirkel: Red breasted nuthatch
Ken Zirkel: Tufted Titmouse
Ken Zirkel: Red-bellied woodpecker
Ken Zirkel: American Goldfinch
Ken Zirkel: House sparrow
Ken Zirkel: Black-capped Chickadee
Ken Zirkel: House sparrow
Ken Zirkel: Pine Siskin
Ken Zirkel: House finch
Ken Zirkel: Blue Jay
Ken Zirkel: American Goldfinch
Ken Zirkel: Carrie Tower
Ken Zirkel: House Finch
Ken Zirkel: Downy Woodpecker
Ken Zirkel: Red breasted Nuthatch
Ken Zirkel: Downy Woodpecker
Ken Zirkel: Black-capped chickadees face off
Ken Zirkel: Finch vs. Nuthatch
Ken Zirkel: Gompei the Goat, Worcester Polytechnic Institute (WPI)
Ken Zirkel: RI State Board of Public Roads, Providence - detail
Ken Zirkel: Arm at the top of Washburn Shops, Worcester Polytechnic Institute (WPI)
Ken Zirkel: House Sparrow
Ken Zirkel: Jonas Clark Hall, Clark University
Ken Zirkel: Worcester Art Museum
Ken Zirkel: Downy Woodpecker
Ken Zirkel: Textron Tower
Ken Zirkel: Textron Tower and One Financial Plaza