Rufous Hummingbird – Metabolic Wonder

Metabolic Wonder

     Hummingbirds, like this Rufous Hummingbird [Selasphorus rufus], are a metabolic wonder.  Scientists have shown that when evening temperatures drop significantly, a hummingbird has a neat trick for conserving its energy.  Their metabolism slows down and they become what is called torpid, like being in a suspended state.  Here, this male Rufous Hummingbird fluffs his feathers and takes full advantage of the early morning sunlight to warm itself.  Sort of like giving a boost to its metabolic engine. 

~ Anecdote and Rufous Hummingbird capture, Metabolic Wonder © Jerry L. Ferrara