noted about AB.
I took the diagnoal path into the extreme end -- which KOL has spotted the PL. Then move along the drain up and down (twice) before moving along the perimeter of the field towards to the "next pickup" point. So far, either my timing is very bad, or I was checking the wrong area -- the activity level is generally low.
#1 is a vertical crop ... so not much room to move up. :P
The Crow was quite "friendly" -- keep returning to the same patch for feeding. But, it seem to be a bit nervous about human contact. It took off when I was still more than 3 meters away. (And, hence the crop)
15 species over 2 sessions in BH seem to be quite few. Technically, 12 are just for the sighting records.