Measures between 24-29 cm and weighs between 98 and 136 g. The adult male has black cloak. Wings with feathers dark brown in flight. The coverts are black, with a slight blue tint covert. The lower back is white. The rump is dark brownish but with the white base. The outer rectrices tail feathers show white spots. Bottoms, neck, chest, belly and Crisso are white but may have a slightly washed white-cream color. We can see a yellow spot on the lower abdomen, sometimes reaching up to the bottom of the chest. The color of the feathers on the underside of the wings is brown-gray with black coverts. The head is white and has a loral dark band and a narrow black stripe from the lower back of the eye that bends down until reaching the upper mantle. Neck, some feathers are longer and pale yellow in color. The beak is strong, straight and long-tipped chisel format. Its color is black with a paler, greenish or whitish base. The eyes are white or pale yellow. They are surrounded by a large periocular ring golden-yellow color. Legs and feet are gray. The female has similar plumage the male's plumage, but she has no yellow feathers on the nape, and a black head stripes not as well defined as in the male, more diluted or blurry. Youth shows the color a little more dark brown than black, with the less brilliant plumage. White areas are dyed beige, and yellow spot in the belly is more diluted. The eyes are gray with blue periocular ring. The young male has the feathers of yellow head that extends from the neck to the crown, while the young female lacks the yellow band at the nape.
For the developers at New York start-up Networked Organisms, smartphones are the butterfly nets of the 21st Century. Their tool, Project Noah, lets people upload photos of plants and wildlife around them, creating a map of the natural world and contributing to scientific research in the process.
Bespectacled scientists of yore would carry around hefty field guides, made up of hundreds of pages of text and photos. But these days, smartphone owners have a lighter option: an app called Project Noah, which aims to help people identify plants and animals as well as collect data from "citizen scientists" about where certain species are located.
Project Noah enables us to be part of a more focused online community where we can learn more about wildlife around us and contribute to scientific research. It pulls participants into deeper, more meaningful engagement by enabling people to go on “missions” to collectively map changes based on sightings.
A modern invention that may also hold the key to saving species in the future. Project Noah is a global study that encourages nature lovers to document the wildlife they encounter, using a purpose built phone app and web community. In addition to the virtual "collection" of species, Project Noah encourages citizen science by linking up with existing surveys including the International Spider Survey and the Global Coral Reef Monitoring Network.