There was a pair
Photos are ordered chronologically.
First observed flight of the owlet on Easter Sunday. Owl flew short distance from nest to nearby tree. Both parents present and hooting consistently during this period. On the flight back to the nest, both parents flew out with the owlet.
Timeline:
Mating (20 - 23 Jan):
https://www.inaturalist.org/observations/105295121
https://www.inaturalist.org/observations/105478801
First observation of branchling (02 Apr)
https://www.inaturalist.org/observations/110462558
First wing flapping attempts (11 - 16 Apr):
https://www.inaturalist.org/observations/112562087
https://www.inaturalist.org/observations/112555868
https://www.inaturalist.org/observations/112555868
Single owlet, on the verge of fledging seen here practising its wing flapping.
Not sure what kind of owl he was, he was super small and had a fun call.