Since that experimental season we have expanded the geographical reach and technical power of what we call Remote Egg Oiling (REO). Our patent-pending Remote Fluid Application System is at the core of devices that accurately deliver a small amount of non-toxic, non-conductive, food grade oil formula to raven eggs in a wide range of previously inaccessible nests. In 2019, under contract and in coordination with the U.S. Fish and Wildlife Service, we applied REO in five desert tortoise critical habitat units, treating hundreds of eggs and reducing the number of ravens causing damage to desert wildlife populations. In addition, we began a collaboration with USGS researcher Dr. Peter Coates to study the effectiveness of REO for decreasing raven predation pressure on eggs and young of the Greater Sage Grouse on two sites, one in California and another in Nevada.
Building on our early success, we anticipate a rapid expansion of REO and are working diligently to refine the tools and techniques we have developed. It is an exciting time as we see the signs of hope for hard-pressed victims of rising raven numbers and their predatory habits.
Drone’s Eye View of Raven’s Nest in Joshua Tree
Oiled Clutch of Eggs