My heart is broken... I went out to the coop to close the girls up for the night and found one of my beautiful Black Jersey Giants dead under the nesting boxes. Still warm, not breathing, no obvious trauma. Everyone's been healthy, weather not out of the ordinary. I'm thinking maybe she flew up in to something and broke her neck, but what do I know. We just celebrated their first birthday February 24th. Will the other Jersey know she's gone? The rest look ok, everyone's roosting, anything I should do different?