I shoot in Al Servo and depending on the situation I use a tripod.

I set up BBF. I get great results with larger subjects such as deer or elk. It’s the songbirds in particular that I have trouble with.

I’m not finding anything about continuous focusing under camera or wrench. Under AF I have Al servo on focus priority

I tend to have difficulties putting that AF point/square right from the get go and then I struggle to get a sharp image. This is especially true with small subjects at long distances. Be assured, I'll be at it tomorrow.

Wow. I can't thank you enough. I missed quite a few shots because of this error.

I feel like I'm back in grade school. But once I press and hold the BBF button, I can let go before I squeeze the shutter correct?

Thanks. I'll give that a shot!!

A 2nd attempt with this post with a downloadable photo.
I have been struggling nailing in focus photos and I have become rather frustrated. I included this photo I took today of a bluebird on a stag horn sumac. If anyone can help, I would appreciate it. It seems my biggest issue is initially nailing the focus, especially with small subjects like songbirds. I was probably 30 yards away when I took this photo. Here are the specifics: Canon 5D Mark IV, EF 100-400 f4.5-5.6L IS II USM, Shot taken - Manual, 1/1250, f/8, ISO 2500 and AF Zone, 9-points and Back Button Focus. When I try to locate my subject, I hit the BBF and sometimes for whatever reason, I miss the focus. I have come to the realization it is not my equipment, but me. Has anyone else gone through this. This should have been a keeper but as you can see, it is far from it. Thanks, Frustrated Fran

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With Al Servo 1st image priority is set to focus priority. Release is on the left and focus on the right. The arrow is far right.

I thought I did. Did it go through this time?

I have been struggling nailing in focus photos and I have become rather frustrated. I included this photo I took today of a bluebird on a stag horn sumac. If anyone can help, I would appreciate it. It seems my biggest issue is initially nailing the focus, especially with small subjects like songbirds. I was probably 30 yards away when I took this photo. Here are the specifics: Canon 5D Mark IV, EF 100-400 f4.5-5.6L IS II USM, Shot taken - Manual, 1/1250, f/8, ISO 2500 and AF Zone, 9-points and Back Button Focus. When I try to locate my subject, I hit the BBF and sometimes for whatever reason, I miss the focus. I have come to the realization it is not my equipment, but me. Has anyone else gone through this. This should have been a keeper but as you can see, it is far from it. Thanks, Frustrated Fran

By far, my most used lens is my EF 100-400mm f/4.5-5.6L IS II USM

No. The elk in Pennsylvania were reintroduced in 1913. Prior to that, they were hunted out completely. Great story as the herd is wild and there is now a hunting season in PA.

These photos were taken the day after the nor'easter came through Pennsylvania that dropped 26" of snow in the northern tier of PA. Photos were taken in north central Pennsylvania in Cameron County.

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Were you able to download the images OK? Someone suggested that I drop the image size. I’ll post a few more.