Mudders

[Merlinsky]

Originally Posted by Port Conway Lane

I think you mean Storm Bird, the BM sire of Birdstone.

Yeah as far as I can tell, there's never been a US sire named Birdsong, just some fillies and mares here. There's a 4yo colt currently racing named Bird Song by Unbridled's Song out of Bird Town who won the Fred Hooper (G3), but that's it. I'm sure he'll go to stud eventually.