Purple-bibbed Whitetip

The purple-bibbed whitetip (Urosticte benjamini) is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia and Ecuador. == Taxonomy and systematics == The purple-bibbed whitetip and rufous-vented whitetip (Urosticte ruficrissa) have been treated as conspecific and as distinct species, each by multiple authors. Since the early 2000s there is consensus that they are species in their own right. They are the only members of their genus and both are monotypic. == Description == The purple-bibbed whitetip is 8 to 9 cm (3.1 to 3.5 in) long and weighs 3.8 to 4.2 g (0.13 to 0.15 oz). Both sexes have a medium-length straight black bill and a prominent white stripe behind the eye. Both have glittering green upperparts. Males have a violet lower throat white below it and a grayish belly with green spots. The tail is dusky bronze; the central feathers have wide white tips that appear as an oval spot. Females have white underparts heavily spotted with green. The tail is dusky bronze with purple near the end and white tips on the outer feathers. Juveniles are similar to females with the addition of brown edges on the head feathers. ==…