Exquisite color, detail, and background. I also enjoy the composition. Another possibility here would be to crop off perhaps 1/3 of the perch from the bottom. Just another way to look at it and nothing wrong with your crop; only a matter of preference or difference.
Allen, this is such a great shot of the bluebird. I like the composition really well. The background makes him stand out more. Your image is making me miss our bluebirds even more. They haven’t come back to nest this year. Maybe they are social distancing from us.
What a beautiful bird, I wish we had them in this part of the world (Belgium ). Personally I always prefer looking at a photo in 3:2 format so I’m wondering if you have space at the top of the original picture to do that? Anyway, that’s just me, lots of people like square too