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The American barn owl is a medium-sized, pale-coloured owl with long wings and a short, squarish tail. However, the largest-bodied race of barn owl, T. f. furcata from Cuba and Jamaica, is also an island race, albeit being found on more sizeable islands with larger prey and few larger owls competing for dietary resources. [3]
The English barn, or three-bay barn, is a barn style that was most popular in the northeast region of the US, [1] but are the most widespread barn type in America. This barn type is, with the New World Dutch barn , the oldest type and has been called the "...grandfather of the American barn."
In the list of birds maintained by Frank Gill, Pamela Rasmussen and David Donsker on behalf of the International Ornithological Committee (IOC) the barn owl is now split into four species: the western barn owl (Tyto alba) (10 subspecies), the American barn owl (Tyto furcata) (12 subspecies), the eastern barn owl (Tyto javanica) (7 subspecies ...
Compared to other owls of similar size, the barn owl has a much higher metabolic rate, requiring relatively more food. Relative to its size, barn owls consume more rodents. Studies have shown that an individual barn owl may eat one or more voles (or their equivalent) per night, equivalent to about fourteen percent of the bird's bodyweight.
The 20 species of genera Tyto and Phodilus, the barn owls, are in family Tytonidae. The other 234 species are in family Strigidae, the "typical owls". Five species on the list are extinct; they are marked (X). [1] For a partial list with additional information, see the article "List of Strigiformes by population".
The clutch size is influenced by latitude, with clutch sizes of northern populations being higher on average than southern populations. [69] The eggs are 20 mm × 14 mm ( 3 ⁄ 4 in × 1 ⁄ 2 in) in size, and weigh 1.9 grams (29 grains), of which 5% is shell.