Hello, on May 30, 2024 I received 8 baby mallard ducklings. They were about 2 weeks old at the time. We have three large 1 acre ponds. It is now August 1, 2024 in PA. When should I release them to the ponds? Currently, I have been keeping them in a small barn barn and letting them into a run every day. When should I release them to live wild on the ponds?