Barn owls, Tyto alba,
is the most common and widely distributed owl species, as well as one of the
most widespread bird specie, on earth. These birds are often called the common
barn owl, which helps distinguish it from the other species in its family
(Tytonidae). The barn owl can be found in almost every part of the world,
except from the desert and polar regions, areas north of the Himalayas,
majority of Indonesia, and certain Pacific islands.
It’s seen in all continents, except Antarctica. The barn owl’s
range covers all of Europe (except Malta and Fennoscandia), most of the area of
Africa and parts of the Sahara, the indian subcontinent, Southeast Asia, all of
Australia, many of the Pacific islands, and North, Central, and South America.
Barn owls are considered to be sedentary, which means that they prefer to stay
in one area where they can find food and mate. They would even stay there even
when there are better foraging areas nearby. However, their movements seem to
vary depending on where they are located. Barn owls in the United States and
Europe travel the most distance, averaging at 998 mi. Those in other areas of
the world would travel an average distances of 400 mi.
This medium sized bird has pale-colored feathers with long
wings and a short, square tail. Sizes vary from subspecies with an average
measurement of around 33 to 39 cm (13 to 15 in) in overall length, and a
wingspan of 80 to 95 cm (31 to 37 in). They also vary in weight, depending on
their location. Some weigh at 260 g (9.2 oz) while other can reach a whooping
555 g (19.6 oz). Researchers have generalised that those who live in smaller
islands are smaller and lighter, mainly because of their diet, which is mainly
composed of insects. These birds also
need to be lighter to help them stay agile while hunting through the forests.
Barn owls have a very specifically shaped tail what helps
distinguish them from other owls while on flight. Other features that make them
stand out are their undulating flight pattern and feather-covered legs that
they dangle while flying. Their pale, heart-shaped face and black eyes give
these birds a distinguishing look, which looks like a flat mask that has
oversized, oblique black eye slits. Above their beak, these birds have a ridge
of feathers that resembles a nose.
These birds come in a range of color between pale brown and
shades of grey. Some of the subspecies that have a more richer brown color have
small black and white speckles all over their body, but these are not as
visible on their main wing feathers. Their heart-shaped face is commonly a
bright white, however some have facial feathers in brown. The lower parts of
their body, which includes the lower leg feathers, varies from white to reddish
and may have little blacking-brown speckles.
Their spots are actually an indicator of how healthy they are.
In the case of the female continental European populations of barn owls, female
specimen who had more spotting were recorded to be healthier compared to those
who had little to no spots. However, this does not apply to males since
spotting varies across subspecies. Also, males tend to show fewer spots on the
breast and underside and are paler in color compared to females. Their beaks
come in a
variety of pale horn to dark buff, and their iris is blackish
brown. Like their beaks, talons vary in color, ranging from dark pink to a
pinkish-grey to black.
Contrary to what most people believe, barn owls actually don’t
hoot. Hooting is typically done by tawny owls and members of the Strix genus.
Barn owls actually make a shrieking/screaming sound which can be ear shattering
when you get too close. This long, drawn-out shriek is really more eerie than
cute, but their looks compensate for their call. They can make a hissing sound,
similar to that of a snake, to scare intruders away. It also makes a range of
rasping sounds or clicking snaps when defending itself. During mating, males
give out a shrill twitter, which signals the females that they are ready to
mate.
Although barn owls are very common, there has been a great decline in their population since the end of the Second World War. this is mainly due to the conversion of their natural habitats into farmlands, towns, suburbs, and other areas used for human dwelling.
Although barn owls are very common, there has been a great decline in their population since the end of the Second World War. this is mainly due to the conversion of their natural habitats into farmlands, towns, suburbs, and other areas used for human dwelling.
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