For the past year or so I've been using trail cams with third-party macro filters for filming birds at close range on my feeders. Presently I'm using a Campark T300/TC02 cam with integrated solar panel. I've produced a video showing how I attach the macro filters to the camera. Full details in the description. I included some sample footage also Thought it might be of interest
Campark T300/TC02 Trail Cam with Macro Filters
Campark T300/TC02 Trail Cam with Macro Filters