Number of png files to convert to grayscale: 6

Processing: A/adelaide-rosella.png - Done!
Processing: A/frog.png - Done!
Processing: A/C/chicken_profile.png - Done!
Processing: A/C/tux.png - Done!
Processing: A/C/D/crowned_crane.png - Done!
Processing: A/C/D/cuckoo.png - Done!

Job completed.