This is a wooden "Uso" bird charm, only available on the Hatsutenjin festival day (January 25th) each year. The zodiac sign for that year is engraved on the bottom, and this year's is the horse. It's believed to turn last year's misfortunes into "Uso" (lies), so how about bringing good luck for this year? The photo is of the one for my own use, so there may be slight variations in the individual charms.