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.
Remember that bat droppings (guano) will accumulate beneath the bat house; this is another good reason to select a somewhat remote location, where the presenceâparticularly the smellâof guano won't be bothersome. You can periodically scoop away guano and add it to a compost pile or use it as a fertilizer for plants.