I realized I hadn't thought about the Swainson's Thrush since I learned about the idea of using #BirdNamesForBirds so I went looking for non-eponym common names.
Some Wikipedia editor loves that bird song as much as I do, because after Olive-Backed Thrush they listed Reverbius Maximus Harmonius.
I realized even harder, that since the last time I heard Swainson's Thrushes singing I had read the excellent book Held By The Land, by Sḵwx̱wú7mesh herbalist #LeighJoseph.
She mentions a story about the thrushes singing to make the salmonberries ripen, and I remember that reading that made me yelp in delight because even I, who have picked salmonberries maybe three times, associate those bird songs and those berries.
I re-read that page of Held By The Land just now, and she gives another name for the Swainson's Thrush: Salmonberry Birds. I think I'll go with that for my #BirdNamesForBirds