Populus tremuloides, the quaking aspen of the North American continent, stands as one of the most easily recognized, most beautiful and most admired of all tree species. In order to help ...

Appearing in hordes of 50 or more, they descend to the feeders, grab seeds and then fly up to perch in the aspen trees. The pine grosbeaks (pinicola enucleator) are found year-round in our aspen ...