I witnessed this yesterday. The kid would catch a gobie, whistle and the mink would come out of the rocks, grab the gobie and go stockpile them. I watched for 15 minutes and saw this occur at least 30 times. The kid said he had been doing it for four hours before i got here. i even hand fed it myself
http://vid42.photobucket.com/albums/e323/chasingfins/VID_20160614_192812337_zpsdjcnspzk.mp4