Salamander Central: Audubon Society of Portland Bird Sanctuary Professional Review and Guide
"Rough-skinned newts, one of Oregon’s most abundant salamanders, trek out of the surrounding forest beginning in March as they make a beeline for the Audubon Society of Portland bird sanctuary pond, where they will breed. By mid-May, the pond is full of newts.
Hike the short trail to the pond. It begins just behind the visitor center and drops down a bit steeply to Balch Creek, a 3.5-mile stream that runs through the sanctuary. It will take just a couple of minutes to reach the pond. Signs will help you find the way. The newts will either be walking along the pond’s bottom or floating at or near the surface, where they tend to congregate on warm, sunny days. The pond is a bit murky, so you may have to look closely to spot the newts when they are underwater."