I'm so sorry you had to do cull one of your four new babies, Gritty. Even if your DH had to do the deed, I'm still in awe of the decision to do the best thing for the chick.
I probably should have culled Tiny Tim, with his one leg that won't move into place for him to stand upright. < *sigh* >
BUT he is surviving as a disabled chick, remarkably well. He practically SWIMS across the brooder in the shavings, and pretty darned fast, too. He can get from one side to the other, the long way, in seconds. He snuggles with the rest of them, nobody has picked on him at all, and he eats the feed they swipe/kick out of the feeder. Because the waterer is on a bit of wood to keep it out of the shavings, I have been giving him supplemental sugar water by hypo drips, and he's starting to refuse that attention. Apparently he's getting his liquids when I'm not looking.
He uses his wings and the one good leg to perambulate. Sometimes he gets up an inch and hops, so I am thinking he just might make it and my inability to cull him might not be such a bad thing, after all.
And he's a cockerel, a little BR. Like I need another rooster! But gosh....