Don't confuse the numbers on the bird houses as address numbers; they are in fact yardages to the center of the green. Phase 2 of my yardage project is well underway. Don't stand in one spot for long, because you may wind up with a yardage tag, yourself. You will see small yardage tags in many visited spots around the golf course. For example:
Rock Bridges
Split rail fences
Rain shelters
And of course, when getting a doggie bag, you are standing 391 yards from #10 green.