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Tiny backpacks for small songbirds
(lemmy.nz)
Thatś a yellow-rumped warbler wearing a multisensor geolocator backpack
The tracker must be light enough to not weigh down a bird that weighs only as much as a spoonful of sugar, and it was used as part of this study:
Tiny backpacks reveal the secret, sometimes circuitous migrations of small songbirds
Very cool! And while not detailed at the circuit level, nice that the article does talk a bit about the sensors.