55 Music Concourse Dr.
Golden Gate Park
San Francisco CA
Regular Hours:


9:30 am – 5:00 pm


11:00 am – 5:00 pm
Members' Hours:


8:30 – 9:30 am


10:00 – 11:00 am

Please note: The Academy will be closing at 3:00 pm on 10/24 (final entry at 2:00 pm). We apologize for any inconvenience.

There are no notifications at this time.

Naturalist Notebook 

September 16, 2011

Who Pooped?

User this one
Replica Scat Photo: N. Sincero 2011, Scat Wrangler: S. Sumrall

This scat can reach up to 8.8 cm (3.5 in) in length. It is a distinctive green color, often with a nitrogenous white coating. You can find this scat all over North America, but you’re more likely to see it in the south during the winter months.

Who pooped?

Leave a comment below with your guess. We will reveal the answer in the comments section on Tuesday, September 20th.

If you have your own natural history mystery (an unidentified animal, plant or other specimen), send a photo or two to naturalist@calacademy.org. We’ll do our best to help out. Please include location, date and any other details that seem pertinent.


Scats and Tracks of the Pacific Coast, including British Columbia: A Field Guide to the Signs of 70 Wildlife Species / James C. Halfpenny; illustrated by Todd Telander. Helena, Mont.: Falcon, c1999. Naturalist Center Reference QL768 .H36 1999

Filed under: Who Pooped — nature @ 8:00 am


  1. The hint makes it sound like a bird, but it must be large in size plus it must know how to get airborne to head south. Maybe it eats algae to make the scat green, perhaps from calm waters to make the algae more accessible? Is my reasoning correct? And is it a goose?

    These games are fun guys. Thanks for doing this.

    Comment by george — September 16, 2011 @ 2:08 pm

  2. You’re absolutely correct! It is the scat of Branta canadensis, the Canada goose.
    You can report sightings and read more about them at one of our favorite sites, All About Birds: http://www.allaboutbirds.org/guide/Canada_Goose/id

    Comment by nature — September 20, 2011 @ 9:12 am

RSS feed for comments on this post. TrackBack URI

Leave a comment

Academy Blogroll