As pink sky slowly darkens behind tall trees, six scientists stand motionless outside the veterinary clinic at Northwest Trek. Only a robin’s chirp pierces the cool air. All eyes are fixed on the clinic’s overhang roof, straining to see through the shadows. They’re waiting for the appearance of a tiny creature that’s often misunderstood, yet is vital to human health, and is now in danger from a deadly disease. They’re waiting for bats. 6:00 p.m. Scientists Michelle Tirhi and Abby Tobin arrive at Northwest Trek, and start scouting bat roosts with Trek staff: conservation engagement coordinator Rachael Mueller, veterinary technician …