I purchased a Kestrel Nest box from Orchard Guard and Installed in a dead tree last year It located adjacent to the Prime Desert Woodland Preserve in lancaster CA- My previous nest box is currently occupied by honey bees. I have removed the bees twice but they always come back (see my info on ace hardware) So I bought another nest box. Kestrels did not nest last year. But this year it looks like they will nest- Heave seen them in the nest box this 14 March and 20 March observed mating
Image:

Kestrels caught in tha act yesterday 20 March the first day of spring
New to site as well - great to see your apparent success!
Fantastick photos Phillip,
Welcome to this site. Here is our KESTREL KORNER link.
http://www.nu-sun.com/html/kestrel_korner.html
Have a great day,
Nu-Sun Cinema American Kestrel Research Center
Winnipeg, Manitob, Canada
The nesting pair that were using the bird house in March Abandoned the nest in April. Not sure what happend
The female may have been killed only the male was seen at the box and then he disappered. I relocated the box to another tree in August and found one egg in the box. Recently have seen the male Kestrel in the area but not visiting the box in the new location
We're sorry to hear about the disappointing results this past spring. It's an unfortunate part of being a kestrel landlord that nests don't always succeed, but submitting your observation data from this past spring (if you haven't done so already) helps researchers determine how often such incidents occur. We hope you'll have better luck next year!
It's not at all surprising that you don't have any kestrels claiming the box right now, as it's the non-breeding season; kestrels do sometimes use boxes as roost sites during the winter, particularly on especially cold nights or during precipitation events, but this is significantly less common than the continuous occupation of the breeding season.
One last question—these are some gorgeous photos, and we'd love to share them on our social media page or in print. Would you be willing to let us do so? We would credit you anywhere they were used.
Matthew
AKP Staff
New Box location in Prime Desert woodlads Joshua Tree