Pasadena Humane Invites Adults to Dissect an Owl Pellet on Earth Day

A one-hour workshop on local owl species — including hands-on dissection — is set for April 22 at the Raymond Avenue campus
Published on Apr 22, 2026

[photo credit; Pasadena Humane]

Inside an owl pellet is a whole small life. The fur. The bones. The answer to the question: what exactly has been hunting in the Pasadena and Altadena foothills at night?

On Earth Day, Pasadena Humane is inviting adults to find out. The one-hour workshop, “Become A Know-It-OWL,” runs from 6 to 7 p.m. on Wednesday, April 22 at the organization’s Raymond Avenue campus — and it ends with participants pulling apart an actual owl pellet to discover what the neighborhood owls have been eating.

The session also covers owl identification: the Great Horned, Screech, Barn, and Burrowing owls documented across the San Gabriel Valley and its foothills. Each species hunts differently, nests differently, and sounds different in the dark.

Pasadena Humane’s wildlife program regularly cares for injured and orphaned wild animals, including owls, at its facility on South Raymond Avenue. The organization, which serves Altadena as part of its 11-city coverage area, has operated on that same property since 1914.

The April 22 event is adults only. Registration is through Eventbrite; check the Pasadena Humane website at pasadenahumane.org for the current ticket link and pricing. Pasadena Humane is located at 361 S. Raymond Ave., Pasadena, CA 91105.

The pellet won’t reveal which owl left it. But it will show — in the cleaned ribs of a vole, in the hollow arch of a mouse skull — that something was working very hard out there, in the dark, to stay alive.