This lesson plan for grades 9 - 12 will teach students to identify habitats in living, dead and decaying trees as well as understand the relationships between trees and the animals that inhabit them. Click here for the Trees as habitats lesson plan from the National Wildlife Federation.
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Holbrook's 2026 Calendar
Each year, we ask our travelers to submit their favorite photos from their journeys with us for a chance to be featured in our annual calendar. This year, as always, we had many great submissions, and
Photo of the Month: January 2026
This adventure to Torres del Paine had been a bucket list item for many, many years! Now was my time for my “latitude adjustment.” There was beauty at every turn we made!
Photo of the Month: December 2025
Above: The critically endangered Great Green Macaw (Ara ambiguus) is a magnificent species native to the rainforests of Central and South America. These macaws heavily rely on the mountain almond tree