It would not surprise me if they were.??I heard/read? somewhere that a researcher at the U of W established that crows can recognize individual human?faces.
Bill Anderson; Edmonds, WA.

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From: Cromaat C <cromaat93 at gmail.com>
To: tweeters at u.washington.edu
Sent: Sun, May 9, 2010 10:31:50 AM
Subject: [Tweeters] corvid question

I've noticed that often when people come out of nowhere and disturb the crows getting peanuts from me that the crows will defecate on them.? I've seen this happen several times.? They've never defecated on me? and they surround me and fly over me often, sometimes even touching me with their wings.? So, are they really doing this on purpose with these people for interfering with their feeling safe to interact with me?