Great report on a study out of Colorado that shows that foraging birds like Mountain Chickadee, Pygmy Nuthatch and Yellow-rumped Warbler significantly increase ponderosa pine growth and enhance the health of the trees. These three bird species were abundant at Cal-Wood. In fact the first time I ever identified Mountain Chickadee and Pygmy Nuthatch was up in the top of a pondersa with Treetramp. Whenever a birder ID's a new species they add it to their life list. In this case they'll go on to my "tree life" list.
Chickadee, Nuthatch Presence In Conifers Increases Tree Growth-moss