I have been learning how to use the various extraction tools in PSP 2019.
The eagle image was taken by our son in law, Greg. They live near the Oregon coast.
I used the Selection Tool, ellipse.
On the duck image, I used two extraction tools.
On the grass clumps on the left of the image, I used the Selections > Edit Selection tool. I wanted to get the individual grass leaves and grass clumps to be on top of the background.
On the ducks and the rest of the grass, I used the Image > Object extractor. For me, this tool worked better than the selection tools; however, it takes a wee bit of practice.