The breeding biology and cone size selection of crossbills was studied mainly during 1995 to 2002 at Abernethy Forest, Scotland, an ancient native Scots pine Pinus sylvestris wood, where only a single ...
Mean weight of mature seed cones from individual windbreak red pine trees varied appreciably. Heaviest cones were generally borne in the middle third of the crown and on second-order branches.
Three cones have the same volume as one cylinder of the same diameter and height. Remember the volume of a cylinder is \(\pi r^2 h\). The volume of the cone is one third of the volume of the cylinder.