Behaviour, and room around the bird
A clean portrait is satisfying, but behaviour is what keeps me out there. A bird preening, squabbling over a perch, working a flower for nectar, or just sitting tight in good light and daring you to outlast it. I have also learned to leave space in the frame. Shot too tight, a bird loses the thing that made the moment worth keeping: where it was, and what it was about to do next.
The case for common birds
A morning does not need a rare bird to count for something. Some of my best ones have gone to bee-eaters and kingfishers I have photographed a hundred times, a few minutes from the house. Common birds are patient teachers in their own way. They turn up often enough that you can afford to miss the shot and simply try again the next day.
Ethics in the field
I do not push birds for a photograph. A nesting pair, a migrant that has just made landfall exhausted, a shy forest species that bolts at the first wrong step: none of it is worth a frame. It is an easy rule to say out loud and a harder one to hold to when the light is perfect and the bird is right there. I get it wrong sometimes. I try to get it wrong a little less each season.