I have a Crested Cream Legbar pullet at point of lay (24 weeks, no egg yet). Less than 48 hours ago I noticed she seemed sleepy-she was resting in the nesting box when she would normally be foraging. Last night when I went out to close the coop door, she was on the floor of the coop with wry neck, already flapping and very distressed. I isolated her immediately, and this morning she was very dead. I have not observed any strange behavior from her at all (appetite or poop) until the sleepiness. No nasal discharge, no sneezing, no weight loss. I did recently ( one week ago) worm the flock with Safeguard 10% (3cc per gallon of water). I'm not aware of any injury, and she did go into the coop at dusk with everyone else. I'm concerned this may be a symptom of something awful as opposed to an isolated event, but can't find much helpful info online. Any thoughts/ideas/questions?