We once had birders who could learn to be photographers.
Today, we have photographers who need know nothing about birds to take bird photographs.
Birds are a natural target for many photographers, certainly for me. Cameras today are as common as binoculars. That said, the rapid growth of digital photography has been both bad and good for birds.
I bought my first 35mm camera when I was 20 years old. I had been interested in birds for eight years at that point, but I rarely took photos of them. The necessary telephoto lens was out of my price range. Second, and this applied even when I could afford such lenses, the return on investment when using film cameras was low.
My experience with photos was one good shot per roll of film. I was fussy. (Still am.)
Buying a roll of 35mm film and paying for processing was expensive if you were going to keep only one or two exposures. Development and printing could take days. Second chances rarely wait days.
Digital solved all of those issues. The quality and choice of photo equipment today is far better. Value for investment is amazing. Perhaps most important of all, the critique is instant: Click and the image is in your hand. You can smile with pleasure, reshoot, adjust or delete.
There is almost no cost beyond purchase of the camera/lens and, if one chooses, a computer for photo display and manipulation.