Hello I'm in the UK...I bought 2 ducklings last night from somebody who was losing their land. She said that the ducklings were around 4-5 weeks old. Aylesbury ducks. One is full of life, eating and drinking fine, running around as normal. The other duckling seems to be lethargic and has it's head always twisted to the side. It has barely moved. It has eaten and drunk but nothing near as much as the other one. Could this be wry neck? It is the first time that I have kept ducklings so not too sure what to do.