Avian Collisions at the Columbia Building

Resource Guide for Bird-friendly Building Design

2011 Portland Bird Agenda

Oaks Bottom Bird List

Illustrated and compiled by Christopher Hinkle, January 2010

Mt. Tabor Park Bird List

Illustrated and compiled by Adrian Hinkle, January 2010

Metro Bird Checklist

Metro's Checklist of Birds in the Portland Area

Discussion with Tom McAllister

"The Howling Wilderness" January 2008

Conversation with Dave Marshall

November 2008

Birds of the Portland Area

Stanley G. Jewett, Ira N. Gabrielson, 1929