Much thanks to RiverGoddess for helping me sex my goslings!
Here's what I got:
Sebastopol/Tufted Roman mix: 4 male, 2 female (hatched 4/15)
Toulouse: 6 females, 2 males (hatched 4/28)
Embden/Chinese mix: 5 females, 3 males (hatched 4/28)
Now I need to mark the males somehow. I don't have enough brooder/pen space to separate them that way, and the only bands available are way too big for them. I tried loosely tying some embroidery thread around the leg, but they won't leave that alone and the others keep pulling the legs out from under them. Can I just use a marker and draw on their legs or something? I have the boys in a separate box right now, but it is too small and it's very, very temporary. Very open to suggestions.

Here's what I got:
Sebastopol/Tufted Roman mix: 4 male, 2 female (hatched 4/15)
Toulouse: 6 females, 2 males (hatched 4/28)
Embden/Chinese mix: 5 females, 3 males (hatched 4/28)
Now I need to mark the males somehow. I don't have enough brooder/pen space to separate them that way, and the only bands available are way too big for them. I tried loosely tying some embroidery thread around the leg, but they won't leave that alone and the others keep pulling the legs out from under them. Can I just use a marker and draw on their legs or something? I have the boys in a separate box right now, but it is too small and it's very, very temporary. Very open to suggestions.