Great Horned Owls: Mating, Nesting, & Owlets

515 Old Timber Road Monticello, IL 61856 | Allerton.illinois.edu | 217-333-3287 | allertoninfo@illinois.edu

Allerton Park and Retreat Center/UIUC

Learn about unique behaviors of one of the masters of the night!

Allerton Park & Retreat Center

Experience Level: BeginnerJoin us for Great Horned Owls: Mating, Nesting, &amp; Owlets on Saturday, May 24 from 12-1:30 p.m. in the Mansion Library.Instructor Mark Glenshaw will share what he has been able to observe and document of mating, nest selection, feeding of the owlets, fledging and gradual maturation and eventual dispersal of the owlets. He will also share many of his photos and videos to illustrate the fascinating behaviors of these beautiful owls.$25/person. Registration will close May 17 or when capacity is reached. All sales are final.Learn more about the space where your course will take place <a href="https://allerton.illinois.edu/farmsspaces/" title="https://allerton.illinois.edu/farmsspaces/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">here</a>. If you will need disability-related accommodations to participate, please email owarren@illinois.edu.By attending, you consent to your image being used in Allerton marketing, social media and publications. Please alert the photographer or videographer if you do not want your image taken.About the InstructorMark Glenshaw is an award-winning naturalist from St. Louis, Missouri who observes, documents and performs outreach regarding the wild Great Horned Owls that live in Forest Park — a large urban park in St. Louis. He was studied these owls six to seven nights per week since December of 2005, documenting their behavior in both photos and video.Glenshaw also received the 2025 Outstanding Educator Award from the St. Louis Audubon Society.His outreach includes an average of 70 owl prowls and 50 presentations per year, including presentations to various Audubon Society chapters and six presentations for the Smithsonian Institution.In 2006 Glenshaw was awarded the Citizen Science Award by the Academy of Science of St. Louis. He is also a Certified Interpretive Guide, a certified Missouri Master Naturalist and a volunteer for Forest Park Forever.About The Farms<a href="https://allerton.illinois.edu/the-farms-an-allerton-folk-school/" title="https://allerton.illinois.edu/the-farms-an-allerton-folk-school/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">The Farms: An Allerton Folk School</a>, offers <a href="https://allerton.illinois.edu/the-farms-a-glossary/" title="https://allerton.illinois.edu/the-farms-a-glossary/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">classes, workshops, and gatherings</a> focusing on <a href="https://allerton.illinois.edu/the-farms-classes-workshops/" title="https://allerton.illinois.edu/the-farms-classes-workshops/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">art, outdoor education, science, storytelling, and wellness</a>. All experiences value hands-on, experiential teaching and learning, and are facilitated by and for the members of the community.Find the complete Summer schedule <a href="https://allerton.illinois.edu/the-farms-summer-2026/" title="https://allerton.illinois.edu/the-farms-summer-2026/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">here</a>.

Great Horned Owls: Mating, Nesting, & Owlets

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Great Horned Owls: Mating, Nesting, & Owlets

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