We placed a box on a berm within our property around April 2016. There was never any activity until this year, around April 2017. We have seen a pair of kestrel claimed the box and live in it. But when we peek inside, there isn't any egg. We observed a third Kestrel nearby, but they don't seem to fight. The pair that live inside the box are courting for the past few weeks.
a. Is it possible the kestrel just claim the box without necessarily laying eggs? If they do lay eggs wouldn't that be too late in May?
b. We live in Salt Lake City, Utah. Will Kestrel live all year round inside the box?
c. When kestrel lay eggs, how do they protect the nest? Because we have a lot of magpies, turkey vultures, and starlings all around.
Thank you very much!