Clean out and moving two boxes out of marshy ground

I went out there with a shovel again, and as I had 14 boxes to check as well, took the bike, the shovel is on it:

that is a small loop that has no bike traffic. I moved the two boxes back there, as they had been in wet ground for years and tended to tip over. One box is in slight upland near the creek now, with the other one almost by the creek:

I cleaned out all 14 boxes, but there was a slight problem in that three boxes were occupied by field mice. How do I know? I had seen that once or twice before and the mice had left by end of May. This however had a mouse, because the mom jumped out as soon as I opened the box. She will climb back for her babies. They can even move the babies one by one, if she thinks I am a threat. The fluffy cotton will come up all the way to the hole.

I found two house wren nests left from last August. They make a tiny nest on top of the sticks the male puts in:

There were 5 or 6 bluebirds acting aggressive to each other as they sort out the nesting issues, territories. Also some tree swallows were beginning to look at boxes. They claim them but do nothing till one day in May, a nest is all built, feather lined and eggs appear almost immediately.

Bit of video:

Two more boxes replaced

I was not really equipped to take photographs, and the little bit of video I got does not show the birds. But as soon as I replaced two boxes on the South side in the middle, a pair of bluebirds appared to check them out.

The old one is on top, I took it away to keep as a spare, we have boxes that are worse than that. I also have new poles so I may move some locations around. Two in particular are in wet marsh.

The two new ones are shown here, with the female preferring the back one. I will check them in a week or two. I can then report "nesting" in eBird, if there is grass inside.