Greek proverb: ἄλλο κορώνη φθέγγεται

Here's a saying from Apostolius, C2.32, with a Latin version from Clavis Homerica. The image is from kurto at Flickr. Here are some more Apostolius proverbs.

Ἄλλο γλαῦξ, ἄλλο κορώνη φθέγγεται.
Aliud noctua, aliud cornix sonat.
The owl makes one sound, the crow another.