You can use pigeons to train and they are easier to obtain and are tough as a coffin nail so easy to care for. I've trained several dog's with them though to be honest I prefer quail as flying rats gross me out
. You can catch them yourself if you can find an enclosed barn or grainery and use a headlamp and net after dark or you might find a seller or even a pest control company that will sell them. Good luck on the new pup.
Boone on a pigeon at 6 months