thebiologyphotoblog:Selasphorus rufus - Rufous Hummingbird [male] “A hummingbird’s brillian
thebiologyphotoblog: Selasphorus rufus - Rufous Hummingbird [male] “A hummingbird’s brilliant throat color is not caused by feather pigmentation, but rather by iridescence in the arrangement of the feathers and the influence of light level, moisture and other factors." More facts here. -- source link
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