Training & hunting maturity
You can take your dog on a woodcock hunt starting at a young age, however, it will be more of a discovery hunt than a pure hunt.
If your dog is young, prefer to take it on short trips.If your dog is not yet fully grown, working it for too long could lead to problems with muscle and body development, etc.
As for the dog's hunting maturity that it can develop, this will vary according to the dog's origins and aptitude. However, one thing is for sure, the more birds the dog encounters, the better it will become as a woodcock hunter.
You can combine these outings with training to reinforce the dog's skills. There are a few trainers who specialise in woodcock hunting. Among other things, the dog is taught to be cautious towards the bird. However, this training is not compulsory, especially if the dog has a good pedigree.