Sparrow Faces

Here's a very handy chart if you’re out in the field and quickly want to compare sparrow “faces” by Richard Edden.

Edden stated, ”Within 24 hours of posting the first graphic online, there was so much positive feedback and support from
MD [Maryland] birders, but also throughout the US, that I decided to jump to producing an app, BirdFace. This is my first foray
into iOS App programming, so BirdFace is an exciting, evolving project, with on-going feedback through Facebook. The anticipated
release date in App Store is April 12th, and I can’t wait to see what happens next.”