I am rebooting this old thread with some questions of my own. I have 7 ducks (2 mallards, 5 females) that are in a pen that is about 25 ft by 30 ft square. There is some grass but 2/3rds of the pen has been turned into a muddy, grassless mess. With it being winter, I'm concerned about the lack of grass and bugs.
They do have a 5ft baby pool and access to another tub of drinking water. My concern is about food.... Every morning I give them 2.5 Qts (10 cups) of Purina duck pellets with 2 cups of whole oats. By the next morning at feeding time, they are acting starved. I do occasionally bring them out some fresh fruit like cranberries, raspberries, etc...or some kale but I don't readily have that stuff on hand most of the time.
None of my ducks appear "thin." There's 4 Pekins and 3 Silver Appleyard. How can I tell if they are being underfed? Should I be feeding them more?