FTB - For the Birds Geo-art caches are all Mystery Caches. These caches are NOT located at the posted coordinates. To obtain the actual coordinates, you must answer one question and replace the XYZ in the coordinates with the correct answer's corresponding value.

By Dan Pancamo - Flickr: CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=14739100
Actual coordinates are:
N 35° 53.226' W 79° 26.XYZ'
What kind of bird is pictured above?
a) Carolina Chickadee: XYZ = 830
b) Great Egret: XYZ = 851
c) House Sparrow: XYZ = 877