You cannot do hunting dog training within the house. It is quite ridiculous to think that your dog will be able to bring back the bird you have shot down when you demonstrate the same within the confines of your home. You need to take the dog out into the open and allow him to run around and get a feel of the field and the sounds of birds that fly above you. Therefore hunting dog training is certainly not easy to do indoors; open spaces and a lot of physical effort are required.