My white leghorn's comb and wattles used to be bright red and in the last couple of days they have lightened up a lot, not red at all. She has also been quite low in energy, laying down for half of the day. There are no other signs of sickness, i.e. no runny nose or goopy eyes. Her crop feels soft and there is no impacted egg although there were poop clumps around her vent. We live in SW Florida, but it has not been terribly hot (daily summer showers have begun), and she has fresh water from me every single day. The waterer has never gone dry. Any ideas?