of a rufous-tailed hawk has only been reported to between 1-3 eggs in a nest. Threats Rufous-tailed hawks are threatened by many factors, especially habitat loss. Rufous-tailed hawks have been losing their habitat because of logging, over grazing by sheep and cattle, and the growth of Pinus and Eucalyptus plantations. Pinus radiata and Eucalyptus globulus are fast-growing invasive plants that were introduced in order to spur the timber industry in Chile. The other main threat to rufous-tailed hawks are local people, who sometimes kill these birds because rufous-tailed hawks attack and eat their domesticated animals. Population estimates Ferguson-Lees and Christie (2001) estimated the population size to be around 100 individuals. In 2001, the IUCN ranked them at only "low risk". They were only listed as "vulnerable" in 2015 because the IUCN estimated the population to be around 299-999 mature individuals and a total of around 375-1499 individuals. If the total number of individuals drops lower than 1000, then they will be designated as "endangered" by the IUCN. But a more accurate and current population estimate is still need to get a better understanding of what danger the rufous-tailed hawk is truly in. References Buteo Birds of Argentina Birds of Chile Birds of Tierra del Fuego Birds of Patagonia Birds described in 1837 Taxonomy articles created by Polbot Taxa named by John Gould