I would have slipped them in with her while she was still on the nest hatching her babies. She may not take to them at 4-5 days. She may not have taken to them then, either. You can try. Just be prepared for mama to beat up the new kids. I discovered the hard way that ducks are not nice to interlopers.
You may be better off just hand raising the 2 you have and let her mind her kids. That way you'll have 2 who like you lots and the rest will just want you for the treats.
You also could try to tame your ducklings by herding the family into a small pen with a small pool (dishpans work great) and sit inside with them. Let them get used to you as you hand feed treats and (be patient) eventually handle the babies. You'll have to corner them to get your hands on them. Lots of quacking, flapping and screaming, but they settle down pretty quick. Be prepared for mama to bite you. I'd wear long sleeves and long pants.
You may be better off just hand raising the 2 you have and let her mind her kids. That way you'll have 2 who like you lots and the rest will just want you for the treats.
You also could try to tame your ducklings by herding the family into a small pen with a small pool (dishpans work great) and sit inside with them. Let them get used to you as you hand feed treats and (be patient) eventually handle the babies. You'll have to corner them to get your hands on them. Lots of quacking, flapping and screaming, but they settle down pretty quick. Be prepared for mama to bite you. I'd wear long sleeves and long pants.
I have to corner them to catch them, but once I catch them they dont mind a bit.
