What are the chances of seeing a White-crowned Sparrow in Portland?
Possible
About 20% of wildlife watchers report a White-crowned Sparrow sighting in Portland on a given day, based on 6,735 verified sightings from GBIF citizen-science data. It is the 47th most-seen of the 230 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

