Tortoises can't find enough sunlight with all the shade created by the panels.

One Desert Research Institute researcher found that it takes a male a minimum of 72 hours to cross the average solar array field but without the warmth of the sun he's not "frisky" enough when he gets to the female to propagate.

This is a serious issue Thunder Buddy correctly points out that there WILL be ecosystem alerting consequences for our taking the sun's energy from the earth's plants and animals.