The Mysterious Singing Blockbird is a mob Lola befriended in Wimpy Villager 16. She met it when she helped it repair its nest. Lola repairing the nest with Artisan allowed Team Runt, Cog and Ophelia to demonstrate the abilities they’d learned to Runt and Breeze. They met it in Glimfrost. Apparently, it is a quest mob that sings the password to a crypt.