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My main time-consumer is trying to find year info on my unmounted stamps
Consider this your apprenticeship, as a World wide collector.
(Not many of us left)
The really difficult, you can post on this forum for ID.
Another option is to go to
ebay, and search for "Japan" place the stamp value, and any other avail info, and see if it pops up there.
Japan is a general toughie for Identification, make sure your stamp is not a "Prefecture" that increases the difficulty.
My database came up with 25 "birds"
There is a green "Cuckoo" bird at Scott 598 and 1067 (3 yen)