
Photo 1
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Photo 2
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Photo 3
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Photo 4
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Photo 5
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A Morning with a Short-Eared
Owl
(First published on Nature Photographers Online Magazine in December
2006)
Since I began
bird photography
not so very long ago, I have had days when I have been able to
observe a particular bird's behaviour and feeding habits. One
such great encounter was with the American
Dipper. This
year Vancouver had a record snowfall during November, and when
the first good day came along, I had a feeling that birds would
be very actively hunting. That day I had the good fortune to
observe, quite closely, another bird that has quickly become
a favourite of mine, the Short-eared Owl (Asio flammeus) doing
just that.
I saw the owl
perching from time to time, and when they do, they are constantly
looking around for prey - or glancing at photographers (Photo
1).
But, more generally,
they are in flight over open marshy country (Photo 2)
When a prey,
usually a vole in this particular area, is heard or perhaps seen,
they hover for a moment before plunging down to grab the prey
(Photo 3)
Then, they either
eat the prey where they find it, or take flight when another
bird discovers there is food to be had (Photo 4)
And invariably
the larger bird, a Northern Harrier (Circus cyaneus) in this
case, steals it (Photo 5)
In my observations
that morning of three Short-eared Owls and five Northern Harriers
hunting over the same area, I discovered that the Owls were by
far the more successful at finding prey under snow cover, confirming
their superior hearing abilities. It was a most satisfying time
spent that morning and I shall cherish it forever. I do hope
that if you ever visit an open marshy area you will also have
the opportunity to enjoy such an experience.
Equipment
Used
- Canon 1D MkII
- Canon 500mmIS
f4 lens with Canon 1.4 and 2.0 teleconverters
- Canon 580EX
flash with Better Beamer
- Gitzo 1348 tripod,
Manfrotto 438 leveller, Wimberley Sidekick
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