The Wings over Water birding festival has been going on for over 20 years now and celebrates birding in Blaine, Birch Bay, and Semiahmoo with speakers and birdwatching events.
The area is wonderful for viewing birds of all types, they have a list of birds commonly seen in the area on their website.
Events may be by registration and fees per-event, so you’ll need to check their website when they post the schedule of events for this year.
Here’s a video from the festival: