Most food is produced with the help of fossil fuels. What many people don't realize is that the [[https://www.nature.com/articles/s41598-022-18773-w|fossil fuel input of our food consists for a large part of artificial fertilizer]].

Before synthetic fertilizer wars were fought over bird and bat shit.

Except from a minor amount produced by lightning, non-synthetic fertilizer is produced by nitrogen fixating bacteria (usually in symbiosis with plants). We can increase this production by planting nitrogenfixers like legumes, or perenials like eleagnus or alnus. These are digested and turned into plant accessible fixed nitrogen. The unsolved problem is to transport them ecologically to the nitrogen hungry crops that grow our food. 

The Birdilizer is a concept that takes these facts and turns them into a designed solution.

Birds and bats react well to nesting options, and excrete most of their nitrogen around the nests. The insects and fruits from highly biodiverse and nitrogen fixing hedgerows around a plot can be harvested by birds and bats and transported to nests under solar panels in the field. The droppings fall straight onto the fields and concentrations can be controlled by washing cycles. The solar panels provide additional income and power to the farm. Under the birdilizers shade can be used for mushroom production or storage. In arid climates, birdilizers reduce evaporation and help with water management through storage and concentration.