Hi,my 8 week old mallard (one of 3) seems completely fine except the last two days he's got a hoarse sounding quack.It's been rainy and cool here in NY , and I leave them outside in a playpen all day then they come in at night. The water I fill the pool with comes from the hose...maybe too cold? They are almost fully feathered now...all but their heads. Any help would be greatly appreciated
But he sounded the same as the others 2 days ago....and they all three have some green feathering on the head...now I'm confused....