The smock mill Goliath in front of the wind farm Growind in Eemshaven in the Netherlands. A windmill is a mill that converts the energy of wind into rotational energy by means of vanes called sails or blades. Centuries ago, windmills usually were used to mill grain (gristmills), pump water (windpumps), or both.
When bat guano is harvested, it is in a powdered form. Plants that can benefit from the use of bat guano fertilizer include vegetables, herbs, ornamentals, and fruit and nut trees.
It is a symbol of communication because the Native Americans observed the bat to be a highly social creature. Indeed, the bat has strong family ties. They are very nurturing, exhibiting verbal communication, touching, and sensitivity to members of their group.