Identify Adult Female Calliope Hummingbirds

Smallest of all breeding birds in the USA, between 2.75-3.25".  The Calliope is tiny, short tailed, with a short, thin bill.  Female is bright green to golden green on the back, pale creamy white on underside.  Head is bright green to dull olive green, face grayish with little rufous, may have dull bronze green with dark spankles and some enlarged reddish spankles with dark to purpleish streaks on gorget throat area, sides are light rufous to buffy. Tail feathers are slightly notched with little to no rufous but also may appear square. Wings slightly longer that tail. Tip of out wing p10 broad and curved.  This little bird is easily confused with female and immature Rufous.