I got 2 babies in May and they are what I believe to be Embdem mixes. Almost 3 months old now. They have been fine and today I noticed one of them is wobbly on its feet. He is eating and drinking and just ate some watermelon and ate food earlier. Does anyone have any idea of what could be wrong? they have been healthy and fine up until now. The 2 momma geese raised them after a week of keeping them in a dog kennel in the goose coop.