So the definition of "loggerheads" is to be in disagreement with someone and believe it or not, "grrr" is used to express annoyance.
So put the two together & include the "logs" that the mink was utilizing as cover. Then one can accurately describe a long session waiting, watching for and periodically having a mink put in brief & erratic appearances, some of which are under water chasing fish.
Then add in some lighting challenges, as it goes from partly cloudy to full bright sunshine, with the sun not in the most ideal position bearing down from left of the mink and eventually in direct line to the front of the lens.
So it was a lot of "grrr" and some wishful thinking for longer mink pop-ups and better positioning but in the end, you always work with Nature and you can obtain those enchanting captures.