In February, when it’s still frigid at night but daytime temperatures are starting to warm, it may look like trees are just sitting their doing nothing — but inside their cells, changes are happening and sap is starting to flow, explains Bowdoin professor and Maine Audubon trustee Nat Wheelwright in his latest video.
Nature Moments�are filmed with the help of Wilder Nicholson, Rebecca Goldfine, Tom Porter, Paul Benham and Genie Wheelwright.
View all Nat’s Nature Moments videos.
