From Eggs to Owls

We’ve hosted nesting Eastern Screech Owls, Megascops asio, in the back garden for about 14 years. For most of those years, the parents raised the chicks successfully and I’d observe them even after they fledged. In other years, and for a variety of reasons, the owls’ breeding season failed. For about 8 or 9 of the Screech Owl years we’ve also employed a working camera in the nestbox. Or rather, the camera would be working at the beginning of the process (mama spending time in the box) but would then go dark for some undiagnosed issue which proved fatal to a viewing a clear video, or, like last year, when a prolonged deep freeze snapped the cable.

This owl breeding season finally delivered a thriving owl family (the most important thing!) and a camera that caught it all–from eggs to owls.

Mama owl, named ‘Uptown Girl’ (by yours truly), sits on the the first egg, which she laid on March 15th.

The second egg appeared 3 days later on March 18th, the third entered the world on March 20th. I observed and kept track of the eggs, then chicks, with photos from the owl cam, the best viewing always at sundown, as mama took a break from the nestbox for a few minutes each evening.

All three chicks hatched about a month later; the two oldest hatched on the same day, the third arrived the following day.

This photo was taken on April 16. Uptown Girl is at the nestbox window, no doubt ready for a break from the fuzzballs. Her tail feathers are visible at the top of the photo.

If you’re squeamish about the owls’ diet, you might scroll past this next photo, though it does require imagination to recognize what their meal was. This photo is from April 24th.

The older they are, the cuter they are! As they grew, they continued to excel in the fluff department and were so fun to watch. They’d nip and nuzzled one another, preen, and look around their limited real estate. This photo is from May 2nd.

Bright eyed and bushy tailed on May 4th! (Well, two of them, anyhow.)

Finally! On May 5th all three are looking up with an owly cheese! for the camera. You’ll notice that they’re each slightly larger than in the previous photo.

On May 6th, they’re facing south, toward the nestbox hole that will soon be the portal to their lives as fledgling owlets.

Once the owlets filled the nestbox space with their size and regular wing flaps, mama spent little time in the box; watching the owlets was so much easier with mama out of the way! The owlets were active in the early mornings, sleeping during the afternoons, and then hungry, noisy, and wanting to feed in the evenings. The parents obliged by bringing food after sundown, each parent taking turns with an owl version of of door dash: pop in feed a baby, take off again. Next parent: pop in, feed a baby, take off again. And so on. Sometimes the door dash was a quick morsel of gecko or insect, sometimes there was a whole carcass of bird or rat delivered.

I never watched the nest box during the overnight hours. I imagine the parents delivered meals all night, given how fast these chicks grew. I could see that each day, especially in the last week or so, the owlets were bigger than the day before. They’d stretch themselves tall, their fuzzy heads almost reaching the camera, and wings were in regular flap mode, as they built strength and agility toward their flight training.

Notice how large they are on May 7th.

I had several opportunities to capture good photos as the owlets begin peeking out of nestbox hole to the outside world. This poor photo of a darling owlet is the only one I managed, mostly due to my own laziness. I should have been more vigilant; the time the owlets spend at the window just prior to their exiting the nestbox for good, is fleeting.

The two, presumably oldest, owlets fledged on the evening of May 10th; the third one was out of the box the following night. I heard two separate owlet begging calls that night in my neighbor’s tree, but also saw one of the parents in my tree, which indicated to me that while the third owlet was out of the box, it was still in our tree. By the next evening there was no sign of any owls. Typically, I’ve observed the owl families for a few weeks after they leave the nestbox, but this family is gone from the immediate vicinity–at least in the early part of the evening which is when I’m looking.

The parents will encourage their offspring to widen their territory and the next couple of months will be all about survival. By late summer, the young owls will be on their own. About 75% of Eastern Screech Owls don’t survive their first year, so these owlets have a treacherous few months ahead of them and it’s unlikely that all three will make to breeding age. I’ll never know which, if any, have survived, but I feel privileged and grateful for what I observed with this family and impressed with the dedication of their remarkable parents.

All the best to you, little owls–come say ‘hi’ sometime, okay?

Owlets!

Fluffy, feathery, floofy owlets have hatched! Two were born on Sunday, the third on Monday. Tiny and fragile, they’re covered with fine, white down; it’s hard to believe that these helpless little creatures will grow into fierce hunters.

Mama’s tail feathers fill the top of the photo. The dark splotch just below are the remains of a bird or rat–I can’t quite tell; food tends to shift around a bit. You’ll notice the scattering of feathers amoung the nesting material.

Uptown Girl is an attentive parent and Shy Guy is now perched in the oak tree, very near the nest box. His job is to protect the nestbox and hunt for his family. He’s delivered a couple of rats and at least one bird, (sob, I think it was a Carolina Wren), as meals for mama and babies. Eastern Screech Owls enjoy a varied diet, which is one reason why they’re so successful in urban areas. Meals range from insects to earthworms, toads and frogs, rodents and birds.

In the weeks that the female was in the nest box awaiting her bundles of joy, she slept quite a bit. Now, she’s more active, with nearly non-stop feeding and cleaning of the chicks. She and the chicks do have some quiet, restful moments throughout the day and often, the chicks are nestled under mama’s warm, feathered body. When the chicks are awake, I’m enjoying their peep-peep songs, such sweet little sounds, though probably indication hunger. Mama continues to trill during the day.

Early in the mornings (about 6AM) when I first check the owl cam, she’s not usually in the box, though she typically returns shortly afterward. Just before sundown, she goes out, but only briefly. As the chicks grow, her absences from the box will become longer and more frequent, as she’ll also hunt; it’ll take two adults to feed these hungry, growing chicks.

It feels weirdly invasive to watch these beautiful animals in their intimate family life, but it’s fascinating to observe the preparation for and parenting of their offspring. Though a few days since the segue from eggs to chicks, the chicks have grown and in a month’s time, they’ll fledge. Their development, supervised by their parents’ excellent training, will continue in more natural settings, less observable by human eyes.

Who-Who’s There?

It wasn’t the signature hoot of a Great Horned Owl, Bubo virginianus, that alerted me to its presence in a neighbor’s big, beautiful Live Oak tree early this morning, but instead, the vociferous complaints of a mob of Blue Jays, Cyanocitta cristata.

I think this gorgeous bird is a juvenile Great Horned Owl, most likely last year’s hatch. It could be an adult, as our neighborhood has sustained at least one pair of nesting Great Horns for years.

Just after I returned from visiting stunning Costa Rica in November, for several weeks each day, I heard a call that I couldn’t identify, even with the Merlin app sound feature. In time, my neighbor (and sister-in-law) discovered that the call is the ‘begging call‘ that young owls use for catching the attention of their adults. Once they’ve left their parents’ tutelage, young owls use that call for a time to let their parents know where they are located in the wider world.

Handsome Bird stayed in the tree for at least an hour, with its Blue Jay back up screamers serving as annoying company.

Blue Jay nemesis perches on the branch just above the owl, cawing nonstop.

As I snapped photos, the big, beautiful bird turned southward, spread its magnificent wings, and flew to a quieter spot. Maybe it’ll get some rest today, before hunting commences at sundown.