I had a first time visitor, that I know of, visit my yard today. The Brown-headed Cowbird is a blackbird that does not build a nest but lays its eggs in other birds nests. Cowbird nest parasitism is now implicated in the decline of many forest songbirds.

Looks like a Common Redpoll

It is a Red-breasted Nuthatch

The EE Wilson Wildlife Area was a WW2 training area. The soldiers must have planted a lot of different trees and floral. The fruit, in my photo, is a small plum. I have seen pear, cherry, and lots and lots of different kinds of apple trees. The area has wild blackberry everywhere so there is no shortage of food for wildlife. It is a great place to photograph wildlife that I enjoy sharing.

Large flocks of Cedar Waxwings are in my area, Albany, Oregon.

I'm embarrassed that I didn't notice the three different birds. BUT, the female Bushtit does have a light yellow ring around its eyes.

Did you know the last 3 photos is a female? Compare the eyes with the first photos.

These Dragonfly shots where shot with my EOS-R set to 1.6 crop mode, a 1.4x TC, on the Canon 100-400mm. Multiple focus points on the EOS-R work great where the 7DII allowed only a single focus point when using a TC.

F/10 has nothing to do with speed. Aperture setting effects the amount of light that is available to the sensor. A setting of F/8 lets in more light than F/11. If there isn't enough light you can set a slower shutter speed or increase the ISO. The EOS R will focus in the dark. If the camera has timed out it comes back on immediately when you bring it up to your face or do any other camera function like touch the screen or a dial.

I did see the firmware comment but the complaint was something I don't even understand and the upgrade improved a "silent shutter" setting that I was glad to see.

It does allow multiple focus points, with the 2x extender, so that helps with BIF shooting but the current weather hasn't given me a chance to try any BIF shooting. The focusing speed may be an issue. I think the Canon EOS R is still a "work in progress". I just installed my first firmware update and expect to see more in the near future.

f/11 and sometimes f/10 with the 2x. It also allows multiple focus points with both extenders.
I also discovered that the EOS R can be set to 1.6 crop mode. With the 2x and the 100-400mm lens you have an effective 1200mm.

I was testing it on the new Canon EOS R.

I was pleased to find out the EF 100-400 L II with the 2x III works as well. Auto focus works and no restrictions on focus points. After hundreds of small and large bird shoots I am very pleased with the results.

I too have the EOS R. I do a lot of bird photography and was very happy to discover I could use my 2X TC on my 100-400 II. It would auto focus and I'm not limited to 1 single focus point. One more plus is that the camera can be changed to crop mode. The crop mode is 1 .6 and with the 2X TC I figure I'm experiencing 1200mm with my 100-400 lens. The other thing I appreciate is "What You See Is What You Get" (WYSIWYG). While looking through the EVF or in Live View you can make almost any kind of adjustment to get the exposer you like before pusing the shutter.