Outcrop Sabrewing

The outcrop sabrewing or dry-forest sabrewing (Campylopterus calcirupicola) is a vulnerable species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is endemic to eastern Brazil. == Taxonomy and systematics == What is now the outcrop sabrewing was treated as part of the diamantinensis subspecies of the grey-breasted sabrewing (Campylopterus largipennis). In a 2017 paper Lopes et al. provided convincing evidence that both the outcrop sabrewing and diamantinensis sensu stricto deserved species status. The South American Classification Committee of the American Ornithological Society and worldwide taxonomic systems agreed, recognizing the outcrop and Diamantina sabrewings. Both are monotypic. == Description == The outcrop sabrewing is very similar to its "parents", the grey-breasted and especially the Diamantina sabrewings. Males weigh about 7.0 g (0.25 oz) and females 5.9 g (0.21 oz). The sexes have almost identical plumage. Their bill is long and slightly decurved. Their upperparts are bright bronze green with coppery reflections on the darker crown. They have a white spot behind the eye. Their underparts are pale gray that lightens to whitish on the abdomen and light gray on the undertail coverts. Their central pair of tail feathers is bright bronze green, the next pair bright bronze green…