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.
loren