Hi. I have a mallard duck ling that is about 4 weeks old. I am unsure on gender. It had brown and black patterned feathers above wings, with brown feathers on neck and a little on stomach. It's bill is black. It's stomach has small black dots about half the size of dimes all over it's stomach in rows. Its tail curves up sometimes, about half the time. Other half the tail goes almost straight down. It quacks all the time. It is pretty loud. Plz help!! Sorry if it there is not enough detail! I hope it isn't too early to tell. Thank you in advance!