You have a better chance at finding a galar bird if when you're using the daily incense, you can use Dialga's special ability to extend the duration of it and yes it works on the daily incense! Use it as much as you want, as I've extended ♕it for an hour and was able to encounter 2 galar birds, but sadly they both ran from me lol. But I've extended it multiple times and had a guaranteed galar bird eac𝐆h time, and so far I've caught 4 galar birds, but have had 38 encounters. They're tough only getting 1 chance to catch them though lol. And yes I did use 1 Master Ball on the galar bird I wanted most, the Moltres because it's so beautiful 😍