external layer of lichen, moss, and tree material. Nest material can be stolen by other females for the construction of a nest. Brooding The female will lay two white eggs of around in length and incubate them alone for around 16 to 19 days. Nest cup diameter increases as the chicks age. Chicks are altricial at their hatch, and will take around 10 to 12 days for feathering. The female will stay with the fledged young up to several weeks. Conservation status This species conservation status is “Least Concern ”, indicating it is not an endangered species, having a wide range and moderate population size, although one survey indicated a 52% decline in population between 1966 and 2015. It appears to be adapted to human-modified habitats. References External links Broad-tailed hummingbird nest with chicks - Birds of North America Broad-tailed hummingbird photo gallery Selasphorus Birds of Mexico Birds of Guatemala Native birds of the Western United States Birds of the Great Basin Birds of the Rio Grande valleys Hummingbird species of Central America Birds described in 1827 Taxa named by William John Swainson Birds of the Sierra Madre Occidental Birds of the Sierra Madre Oriental Birds of the Sierra Madre del Sur Birds of the Trans-Mexican Volcanic Belt