SPOILERS AHEAD! BE WARNED!
Bats zip to and fro above. Their cries sound almost like speech.
Unlocked with 1 x Sulky Bat
Occurs with Standard Frequency
1 x Sulky Bat
A matter of luck: It could go either way (success chance: 50%)
A leathery scatter
Wiki note: 5.3% after 304 successful actions
For a moment you think you've seen the last of your bat...