I'm with Farnboro John and Patkin. Do what you fancy. I try to carry both my bins and my camera with me. Some days are good for birding, and other days are great for photographing. You never know what you want to do until the time comes.
Once I thought I saw three swans flying overhead in Barns Ness. Didn't give it much thought, but photographed them anyway. When I returned home, they turned out to be spoonbills! Who would have thought of spoonbills in Scotland! So photographs do help ID bird later and help correct your mistakes.
And when you are unable to go birding, you can look back at old photos and reminisce (the way I have been the past week).