Semi-monthly bar chart of seabird abundance off Oregon
|absent or very rare: less than annual|
|rare: a few expected on less than half the trips|
|uncommon: expected in low numbers on 50-75% of the trips|
|common: expected in good numbers on most trips|
|South Polar Skua|
* - indicates abundance primarily or exclusively nearshore.
Copyright © 2001 by The Bird Guide, Inc., all rights reserved.