I lost one chicken last week - Blackie, one of the Sexlinks that I got last year, died - possibly because she was eggbound?  Don't know for sure, but she was the only one I knew for sure that was lying eggs, and then I stopped getting eggs completely, and the other chickens seem to be doing fine, so it wasn't anything contagious.  I'm getting 1 egg every 3 or 4 days now, so as the days get longer, I'll get more eggs....I hope!  I have a plan for more chickens, too.  Cindy M has a couple of dozen eggs  incubating, so we'll have chicks in less than 3 weeks (21 days from start of incubation).  The eggs are Araucana chickens - they lay colored eggs.  I'm also looking for at least one Easter Egger (also lays colored eggs) - depending on how many of the eggs hatch, and how many are hens (we don't want a rooster....)  We are definetely not counting our chickens before they hatch!