I'm the bright green poo person... wait that sounds wrong. I'm having the same issue this winter. I said what I said based on the folks that performed the necropsy on my ill ducks. Metallic green poo is BAD. I've been seeing it around for a week or two now and have been in a constant state of worry and vigilance. But since it's been absurdly cold here (and most of my birds adamantly refuse to go into the coop or other shelters) I wonder if it's just weather stress? I don't know. I also didn't pay attention to the poo colors last year so maybe my spring heartbreak started much earlier and I just never noticed. I was also told as long as they eat, drink and preen they're probably ok. But I've been seeing this around so much I'm going to email the necropsy bird expert and see if he has any thoughts. If he does I'll post them here. If anyone else has any thoughts on this, that would be awesome.