While checking a traditional nest site in a castle in Tipperary we came across the adult male shown in the video clip below. The previous nest site within a chimney which had been used by the birds for the last three years has been taken over by Jackdaws and is no longer suitable for the owls, so they have had to relocate to another part of the castle. While searching for the nest we found the adult male perched in a shallow roost cavity.
As well as ringing the chicks, ringing adult birds also gives us really useful information on survival and turn over within the population. This was our first encounter with this particular male, which we ringed and quickly released. As you can see from the clip he was in excellent condition and is one of the largest males we have ringed to date (based on wing length measurements).
From this birds behaviour alone, and the fact that he did not leave the area after release it was obvious that there was a nest in the castle, and thanks to Ricky O'Brien for doing a night shift to listen for the sound of "snoring" chicks and locating the new nest site which we subsequently revisited and ringed two healthy chicks. This impressive and feisty male is obviously a good hunter and provider as well.
Releasing an adult male at a nest site in Tipperary (video: Dario Fernandez-Bellon under licence from NPWS)