I would think the annual infestation of tent caterpillars would be a feast
for some birds. I just learned that Bullock's Orioles have a taste for
insects, including what some birds might find unpleasant, like hairy
caterpillars.

The photo at this link <https://flic.kr/p/2pUuTkb> shows the common Western
tent (right) and the less common Forest tent (left) caterpillars with a
beautiful Bullock's Oriole in the middle.

There were at least 4 if not 6+ at Lake Terrell yesterday, seen near the
entrance and at the main parking area.

Later, I saw a pair on Douglas Rd (Ferndale) while watching a Western
Kingbird, after watching the group of American Pelicans in Lummi Bay. Twas
a good day birding.

Eric Ellingson

360-820-6396
esellingson at gmail.com
https://www.flickr.com/photos/ericellingson/