Blue Swedish can and do go broody quite well. The colors are fascinating. Swedes come in Black, Blue and Splash/Silver.
If you breed blue to blue, you get 50% black, 25% blue and 25% Splash.
The reason is that blue is cause by a combination of genes and it doesn't breed true. They must occur in the right combination to produce the blue color. These genes are the black and dilute gene (the one that cause splash).
Black is produced by two black genes, represent these as BB.
Splash is produced by two of the dilute genes, represent these as blbl.
Blue is produced by one of the black genes and one of the dilute genes, Bbl.
So
Black (BB) crossed with Black (BB): 100% Black (BB)
Spash (blbl) crossed with Splash (blbl): 100% Splash (blbl)
Now here is where it gets fun:
Black (BB) crossed with Splash (blbl): 100% Blues! (Bbl)
Black (BB) crossed with Blue (Bbl): you get 50% Black (BB) and 50% (Bbl)
Splash (blbl) crossed with Blue(Bbl): you get 50% Splash(blbl) and 50% Blue (Bbl);
Did that help, Daniel or did I just make it sound waaaaaaay confusing?