Utilizing freely avaliable microscopy software, I've put together a process that allows me to trace movements from digital video.

grackle accumulation 001

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grackle accumulation 001 crop

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Hawks 10 seconds

Hawks 20 seconds

Hawks 30 seconds

Ants 60 seconds A

Ants 60 seconds B

Ants 40 seconds

Ants 15 seconds A

Ants 15 seconds B