I always assumed Sunbirds fed on flower nectar like hummingbirds, by inserting their beak into the corolla.
However, I observed these Sunbirds, as well as Purple Sunbirds, piercing the corolla with their beak near the
base of the style, presumably where the nectar is stored. Their beak created tiny slits in the petals, which
can be seen in the right photo above. These are the flowers of the Yellow Trumpet Flower, Tecoma stans>.
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