Tierra de Oro Laboratory

Physiology and Ecology in the Pinyon-Juniper Savanna

Owls 2025: Owlet Growth I (4/29/25 to 5/9/25)

4/29/25: Feeding and Growing

More mice than owlets!

Part of a long feeding session where we can see the owlets being fed

The feeding session interrupted by the delivery of yet another kangaroo mouse. 

5/2/25: Growing Fast

The little owlets are maturing quickly, going from fuzzy blobs to chicks with pinfeathers. The food conveyer belt continues to fill the nest and the owlets with mice.

This first video starts with a good view of the kids, and youngster downing part of a mouse. Mom comes back, followed by dad with yet another mouse.

The next clip starts with the owlets snoozing adorably in a heap. The mouse sitting next to them was not enough, apparently, so a parent brings them another.

Sitting next to mom, eating a piece of mouse.

The moth that one of the parents brought was not very popular. The delivery scene gave a good view of the hubbub when both parents are in the box.

5/9/25: Catching up

We had some disruptive if very welcome wet weather during the last week. The good news is that the 3+ inches of rain will be very much appreciated by the trees. The moisture did however, interfere with Terry’s ability to access the owl video.

Your patience is now being rewarded, because the owlets continue to grow at an amazing rate.

Parents continue to deliver mice to the ever-larger fuzzballs. Dad tries to give a mouse to them, but ends up just dropping it

The rodents seem to pile up, but the little ones must be eating them at some point.

The third shows a feeding session by the mom where she looks up at the camera a few times (does she suspect she is being surveilled?

More recent footage, and some nice stills, will be posted in the next few days.