Limit by calendar year: 2011 All
| vol. 2 pg. 162.pdf | 95 |
| May 2011 | June 2011 | July 2011 | August 2011 | September 2011 | October 2011 | November 2011 | December 2011 | January 2012 | February 2012 | March 2012 | April 2012 | May 2012 | |
| vol. 2 pg. 162.pdf | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 22 | 29 | 19 |
| Two incidental observations of waterbirds at Valsetz Lake, Polk County | 354 |
| United States of America | 204 |
| China | 22 |
| Japan | 18 |
| United Kingdom | 9 |
| Romania | 9 |
| Canada | 6 |
| France | 6 |
| Philippines | 6 |
| Russian Federation | 6 |
| Sweden | 6 |
| Washington | 38 |
| 15 | |
| Seattle | 13 |
| Scranton | 11 |
| Albany | 10 |
| Beijing | 9 |
| Los Angeles | 9 |
| Woodstock | 8 |
| Chicago | 7 |
| Portland | 7 |