Rather Uncertain June nesting

What is going on? With possibly 14 bluebirds total, this could be the worst of four seasons I have run this project. Even when cold killed whole broods of bluebird young, they renested.

The typical timetable is here: Timetable

The remaining bluebird activity is just two nests with two young, such as these two that were at least breathing.

Odd to see one on its back but it was breathing. This nest had four eggs but only two made it to this stage. One nest on the North side keeps having four eggs in the box and the female was incubating. I wonder how long they will sit on eggs if nothing comes out of it? In the next 4 days the 14 day incubation is done. If they do hatch and raise four, then our total could be 18 raised and close to the 20-25 we expect.

TREE SWALLOWS

These were a bit odd as well. The parents are attentive and fly in and out of boxes. One pair seemed to be having well feathered young but I found two in the box today and they were not ready to leave. What happened to up to five?

what I am seeing a whole range of nests at this point. Where they should be:

Two odd nests with just one chick (this one was a bluebird) :

The box next door had one swallow, And a couple of boxes with just one or two eggs.

All in all it has been a poor  May for Swallows. Normally they pick up and succeed, even if late. Now many have just given up. The North side with the ponds and insects very close by is doing worse than the South side where the boxes are along a path. There is a creek there, no pond.