I will check your geocaching.com statistics to verify your finds. If you do not meet these requirements, your log will be deleted.
Generally accepted rules, guidelines, and conditions for logging a cache find apply. These must be bona fide caches listed on Geocaching.com that you have personally (physically) found and logged.
Caches found prior to the creation of the birthday challenge will count.
While you may have others with you when you find the birthday challenge cache, only those who have fulfilled ALL criteria for this cache will be allowed to log it as a find. Find logs by other cachers will be deleted.
Difficulty and terrain ratings are based on the number of caches needed to qualify for the challenge. Actual container should be very easy to find.
Good luck, enjoy, and be safe. Remember that this is a game and is supposed to be fun!