Tenants

There may be tenants in one of the nestboxes! This morning a male and a female were observed at one of the boxes. The male was perched on the roof and the female came out of the box, perching briefly at the entrance. They both flew to a nearby perch as I walked by.
Eastern Bluebirds display this behavior as part of their "courtship." The male will perch at a possible nesting sight, as if to say "look at this great home I've picked out for us." The female will check it out and decide whether the home will meet their needs. If she decides it is a good place, she will then begin nest building activities.
I will be watching this box carefully to see if this pair has decided to use it as their home. 
Several other pairs of Bluebirds were seen in the area this morning as well. 
I hope to get some good photos soon.

Activity Continues

Male and female bluebirds continue to be observed perching on or near the nestboxes. Nest-building should be starting in the coming weeks, so perhaps a pair or two will choose one of the boxes for their nest.  The arrival of Tree Swallows is imminent, so look for them around the boxes as well. They readily utilize these type of boxes for their nests.  Spring is on the way!

Possibilities

There have been signs of activity around the nestboxes and this morning a male bluebird was perched on one of the nestboxes. A female sitting on the fence close by seemed to be communicating with him. Male Eastern Bluebirds will display at possible nest sites to attract a female. They may carry nesting material into the cavity, or box in an effort to show what a great home he has picked out. Does this mean the two birds I saw today will claim this box?  The only way to know is to keep watching. If you are walking in the park, take some time to see if you can spot any bluebirds around the boxes. Please do not disturb the boxes, but watch from a distance. Remember, photos of activity will be posted here. Keeping your distance gives these birds the best chances of success!