Ruby in the grapes.

Ruby-crowned kinglet in the grape vines, Oct 29, 2018, Rondeau Provincial Park, Ontario, Canada.

Didn't look like it was interested in the grapes but it did like the little bugs attracted to the grape crop.
Regulus calendula
Metabolic studies on Ruby-crowned Kinglets suggest that these tiny birds use only about 10 calories (technically, kilocalories) per day.
source - https://www.allaboutbirds.org/guide/Ruby-crowned_Kinglet

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