Thank you both! They are only a year and half old. I haven't noticed any difference since adding the charcoal. Their pen is made of chicken wire, but there's no metal on the ground they could ingest...
Here's a video:
Hi there! First time poster here :)
I've had Pekins and Indian Runners for a number of years without any problems, but I've lost three (1 Pekin and 2 IR) over the past three months. One by one-- and all about a month apart-- the ducks would start flopping with their wings instead of...