and at every one of them, ravavens are wawaiting: way stations, restaurants, feedlots, recycling yards, landfills, even road kill on highways, just about any place people are careless with food and water. nussear: and we see some of those things even with linear features, such as power lines, where nest sites are now supported, all throughout the desert, where in a lowland landscape with just shrubs like you see around here, there aren''t realllly nesting opportununities. and so what w'e creating is additional resources that allow them to get further into the desert than normal. narrator: almost any structure can be utilized for a nest. natural sites are being supplanted by man-made sites across the desert, increasing reproductive success rates. just two surviving chicks from a clutch of eggs means that the nesting pair has at a minimum replaced itself in just one season. these chicks will be sexually mature in 3-5 years and may breed for several years. so with each new generation, there is a steady population increase. and it's not just nesting sites that we provide. many nests includ