There are a few interesting things going on in this video: gular fluttering, nictitating membranes, and head bobbing. Owls and other birds use gular fluttering to stay cool when the temps are high. Owls nictitating membranes (essentially a second eyelid) help protect their eyes when attacking prey. Lastly, head bobbing (motion parallax) helps owls triangulate their sight on a given subject since their eyes are fixed in their skull and cannot move on their own.
Tag: owlet
Screech owl copulation and feeding
This year, the fourth season of a Western screech owl pair using the nestbox in my yard, was a difficult time for the owl pair. Five eggs laid and hatched, but only one nestling survived to fledge. This video shows a copulation event after the eggs hatched and when only one nestling remained. It also shows how the adult male brings food to the adult female to feed her nestling.
The lone screech owlet
This year only one of five nestling screech owls survived to fledge. Based on the body condition of the nestlings that died, I suspect secondary poisoning by rodenticide. The surviving nestling fledged a few weeks ago and I’ve seen her perched in a nearby tree with one of her parents now and then.
The Screech Owlets have left The nestbox
The little western screech owls fledged last night. After documenting them in their nestbox every night and some days for over three months I feel a bit sad and will miss them. They are now out in the wild world and will, hopefully, have successful careers as owls. They’ll still be fed by their parents for a little while longer as they learn to hunt and fend for themselves.
Western Screech Owl Nesting Update
The western screech owl pair have been busy feeding three hungry owlets. The nestlings appear to be nearing the time to leave their nest. Last night both parents made over 16 feeding trips which included grubs, geckos, and a small packrat.
On previous nights, prey items also included a small bird, western blind snakes, spiny lizards, moths, and even a hummingbird. Seeing the dead hummingbird getting eaten by an owlet made me sad as hummingbirds are dear to my heart.
The young screech owls have also been spending time checking out their daytime word:
My Earth 