Dr. didn't know...just an eval by imaging. She believed it to be metal poisoning based on the violence of the seizures. Guess she saw this in other similar bird cases.
I took the liberty to count the last few ducks everyone forgot to add. The total is 1700 (plus or minus).
Now add it to my total of 16 ducks.
(6 Khaki Campbell, 7 Cayuga and 3 Ancona)
That makes a total of 1716...