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| Wild
Barn Owls |
| The
Wild Barn Owl |
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Latin
Name: tyto alba
UK Population Figure: Estimated
at around 4 to 5,000 pairs.
Plumage: The plumage covering the head, back &
outer wings are of a rich apricot colour; scattered with silvery
blue mottling & the frontal area & under parts of
the wings are of pure white, eyes are black & surrounded
by a distinctive white facial disk that is heart-shaped.
Female Markings: Distinctive black speckling on frontal
area under wing parts & a distinctive dark pencilled line
around the facial disc together with an apricot coloured necklace.
Male Markings: Under parts & facial disc are of
pure white.
Hearing Capabilities: Barn Owls mainly hunt by sound
rather than by sight. With it's acute hearing the Barn Owl
can detect the slightest movement & sound of its prey.
The ears are set asymmetrical, one higher than the other under
the feathering of the inside edge of the facial disc, located
next to the eyes. The facial disc acts as an amazing sound
funnel, collecting & filtering sound. This allows the
Owl to detect the movement of its prey with complete accuracy.
It is said that a Barn Owl can actually hear a mouse's
heartbeat in a 30ft sq room.
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Diet: The main diet for the Barn Owl is the short-tailed
Vole; other rodents include shrews, wood mice & young
rats.
Favoured Nest & Roost Sites: Old barns, tree hollows
and nest boxes. Click
here for nest boxes
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Barn Owl Pellets: An Owl pellet taken
apart carefully will tell you everything about the type of
prey it has been feeding on.
A Barn Owl pellet consists of the remains of small mammals,
these remains are the skeleton parts that are tightly wrapped
in condensed mammal fur. Due to the low acid content within
the Owls stomach these are items an Owl cannot fully digest.
Pellets are formed within the Owls stomach & then regurgitated
or coughed up out of the beak, this usually takes place whilst
sat at its favourite roosting perch.
If food is plentiful, a Barn Owl can regurgitate at two separate
intervals, two pellets per day.
For further reading on Barn Owl pellets & diet
please visit the web site of the Mammal
Society
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Good Habitat: Open countryside that contains a good
mixture of the following:
Rough Grasslands, marshland, scrubland, young tree plantations,
hedgerows, edge of woodland & field margins left alongside
hedgerows.
Habitat & Land Management Advice.
Visit the web site of FWAG:
Farming & Wildlife Advisory Group
In support of the wild Barn Owl, there are many organisations,
landowners & individuals throughout the UK involved in
habitat & nest box projects.
This is to help support the growth in population & to
support its prey.
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Food: The main food intake is the short-tailed Vole, other
small rodents include shrews, wood mice and young rats.
Do Barn Owls mate for life? YES if the environment
doesn't pose a threat.
Favoured Nest & Roost Sites: Old barns, tree hollows
and nest boxes.
Breeding Season: Around March or April. This can be
delayed if the weather conditions are bad. Eggs are white
& oval shaped. The clutch size can average from 4 to 6
depending on habitat, the largest clutch size ever recorded
is 12. Incubation time is approximately 33 days. Barn Owls
can have up to 2 broods per year if the habitat and weather
conditions are in their favour. The Young Owlets will fledge
at around 50 days & disperse to further territories.
It is sad to say that the majority of young Owls will sadly
perish within their first year.
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Hazardous Conditions & Dangers
Barn Owls face.
- Harsh weather conditions.
Severe weather conditions such as prolonged rain & snow
can have a great effect on the Barn Owls ability to survive.
Many die from starvation under severe conditions. They simply
struggle to find prey. (Click Images on the right)
- Motorways, busy main roads &
railways.
The rough grassland verges alongside commuter
routes create the ideal areas for voles & other small
rodents. These areas automatically attract Barn Owls to
hunt alongside them. Many Barn Owls perish because the get
hit by fast moving traffic.
- Loss of grassland habitat &
hedgerows. Intense
farming & heavy grazing will have a devastating
effect on the number of voles. This inevitably will create
problems for the Barn Owl.
- Drowning in water troughs/cattle
troughs. This is fairly common during the breeding
season especially when the female leaves the nest site to
take a drink or to bathe. For the Owl's safety it is always
a good practice to place on the surface of the water, a
floating object, big enough to allow a Barn Owl to climb
to safety if she falls in.
- Other factors that contribute
to the decline in Barn Owl numbers. The
loss of suitable roost & nest sites, for example old
buildings & barns being converted into dwellings, a
shortage of natural tree hollows, rat poisons, shooting
(we were recently called out to a Barn Owl that had been
shot, sadly the Owl died at the vets from its wounds, we
were amazed that this type of persecution it is still happening
within the countryside. Why?)
- Average life span for a wild
Barn Owl. Due to the above dangers, wild Barn
Owls do find it very difficult to survive. The life span
of a Barn Owl in the wild can average anywhere from
1-5 years. In a more protected & safer environment a
Barn Owl can live up to 20-25 years.
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A CENTRE DEDICATED TO COMMUNITY EDUCATION,
CONSERVATION & BIRD WELFARE
The Barn Owl Centre: Netheridge Farm, Netheridge Close, Hempsted, Gloucester. GL2 5LE
A Company Limited by Guarantee. Registered in England. Certificate of
Incorporation 4147016
Registered as a Zoo. Licence No: 1/2002
A
Registered Charity. Charity No: 1097410
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