There’s a watershed/greenbelt across the street from a park on the lake There are a half dozen, rather tall, deciduous trees, with large nests in the upper branches.
Since early Febuary there has been one or two huge birds standing on the edge of each nest. They’re bigger than seagulls. They might be about the size of canada geese.
They have round bodies with short tails. Their bodies are perpendicular to the legs, which are moderate in length. Their beaks are long and slender. They look to be either gray or mottled black and white.
The beaks look longer than geese. And do geese even nest in trees? I’ll try to get a picture.
Wow, Washington’s fish and wildlife page is every bit as non-intuitive as my state’s. I can’t even find a list of native species on your site.
Anyway, I did find some photos on the page. Do the birds look like this? (Great Blue Heron) I sort of doubt it, given you think they’re geese size, but that’s the only thing remotely like your description that they bothered to take photos of. Maybe this site will help you if that’s not it. There are pictures of a lot of birds.
There’s a nest at Stow Lake in Golden Gate Park in San Francisco. Someone did the right thing and immediately protected them and forced tourists to keep their distance. (You can look through tripod telescopes they’ve set up, but you can’t antagonize them nor get too close).
It’s paid off - most of the offspring return to the same location so now there’s a dozen or so. Quite an amazing sight.
I still haven’t been able to get pictures. I didn’t mention the legs because the nests are so high that it’s hard to tell how long the legs were. Even from the road, the nests are almost directly above.