Again no proof, but in a period of 2 months I hit everything in the air that had feathers (they didn't call me the chick magnet, but they should've). I don't know if this is common in the CRJ, but they mostly hit close to the cockpit so it was easy to keep track of one's kills. This also coincided with the end of the rainy season in Mexico, and I was switching my radar off and switching to terrain on approach and initial climb (no clouds, many mountains). The cheif pilot finally wrote me an email asking me if I was using radar on approach and landing. In each strike my radar was off. It has been on ever since and I haven't killed anything (at least to my knowledge). The birds are happier, maintenance is happier, and I haven't had to write a report in close to a year. Radar on seems to work for me.
rcl