Have you studied the hippocampus memory of hummingbirds much?
Their glucose is consumed to preserve their extraordinary 3d spatial memory for all their food sources.
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https://pubmed.ncbi.nlm.nih.gov/22357941/
"...analyses reveal that the HF in hummingbirds is significantly larger, relative to telencephalic volume, than any bird examined to date..."
-- IMO the ability of the Hippocampal spatial 'compuiting' - is what consumes the glucose in what is their 'GeoPU' - and so to be able to think in a 3D volumetric space - not vector space - allows for such precise control where the positional coordinates of a food source have a heavy weaight in 3D and Temporal Memory - which is the same as how it can navigate in a 3D point space with its hovering...
It Computes to Live and it Lives to Compute.
GPU folks should be studying hummingbirds.
Especially for AI patchfinding with sensor awareness - as some hummingbirds migrate ~2,000 miles from Chile to Canada.
https://www.hummingbirdsplus.org/nature-blog-network/ruby-th...
Now note how frequently this critter needs aerial refuling, and it needs to know the best and most efficient path to hop all the food-check-points over 2,000 miles
https://i.imgur.com/3MvzmX9.png
Hummingbirds can fuel expensive hovering flight completely with either exogenous glucose or fructose
https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111...
>By foraging frequently and fuelling hovering flight directly with ingested monosaccharides hummingbirds avoid the energetic tax associated with the cost of synthesis of fats from these sugars prior to their oxidation. Remarkably, hovering hummingbirds are able to utilize fructose and glucose equally, a physiological feat which no mammals are thought to match, and one that suggests novel physiological capacities for the oxidation of fructose by active muscle tissues in hummingbirds. The data presented here indicate hummingbirds enhance net energy intake though specialization of diet, behaviour, and, uniquely, metabolic physiology.
-- now imagine the ripples that are running through the hippocampus thats maintaining this level of efficient precision of a Body that has near instant acceleration and precisice altitude control in a 3d volume.
Hummingbirds are the most amazing critters.
We should be studying humming birds glucose control through the HF, not rats.