This is 1 of 4 identical bird houses, each dedicated to a different bird.
Take note of the number carved on the back: you will need all 4 numbers in order to find the bonus (Chateau des Oiseaux).
This is a simple multi, requiring some basic math.
At Stage 1, look at the 3 signs on 2 posts, and answer these questions:
NOTE: A vital sign is now missing.
Final coords are now listed as a waypoint.

PS: I always get a kick out of these signs, because the rules are violated daily, throughout the summer.
Happy Caching, and Merry Christmas 2022
Please be aware of farm vehicles March – November
Please….NO NIGHT CACHING