I believe we all know the phenomenon for which we need a new descriptive term for. Perhaps a play on native people's words may work? Or a mix of other common words.
The word I'm looking for decribes when you're sitting on stand for hours, looking at the same forest. You've looked at a said, smallish deer sized stump 100 times over the hours. But as dusk fades in, suddendly you glance at the same stump, you get that silent "deer!" flinch and you think it's a deer, even though you know it's the stump. As the light fades more, you may even glass the stump that you know is a stump because it looks so much like a deer, but you "know" it's a stump because you've looked at it 100 times with the last few hours.
Or, the big oak leafs by the rotting log with the big leafless branch sticking up over it, that also as light fades, the oak leafs becomes a deer's ears, and the knots on the log become the ring of a deer nose and an eyeball, the dead brach becomes a decent rack and you flich when you glance at it because now it looks like a deer's face and rack, that's been bedded in front of you the last 3 hours. But all the while, you've looked at that same log many, many times.
I was thinking something like "deerja-vu". LOL
Any other good thoughts for a word to simplify this hunting phenomenon?