2nd March 2007 |
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The male achieves his goal, along with some woodwork |
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Early this morning around 7.05am the local Sparrowhawk made a kill
right outside one of the windows in the house. It was a slightly
noisy affair and once it released its grip on its prey before
flying off it was quite evident that another Blue Tit had just
been turned into breakfast.
Nature is nature of course
and the survival of the fittest will always continue, but we just
hope it doesn't take a fancy to either of the birds currently
visiting the box. We've never known the one (or
two?)
Sparrowhawks to be quite so
active around here as they are at the moment.
Some statistics say that
only about 30% of the Blue Tit population survives its first 12
months. They fall victim to the cold weather, window collisions,
illness, natural predators, domestic cats and a host of other
unfortunate accidents.
Anyway, the good news is
that it didn't catch either of them, and with bright blue skies
and an overnight low of -0.5°C the pair were back again.
The high today was 11.2°C
and by mid afternoon the blue sky had been replaced by cloud with
a few spots of rain thrown in for good measure.
Not as many visits as yesterday,
but the visits were longer today.
The first visit to the box
was at 7.09am and the male made 3 more trips before he caught
the eye of his partner and popped inside for another chance to
get her to do the same:
As soon as he was inside she appeared at the hole, although only
briefly and he was left inside with no proper purpose in life
so quickly shot out in quite a vocal manner:
By 9.00am there had been a total of 26 visits to the entrance
and the male had been inside on four occasions, each time
hoping to attract her inside.
Just before 9.02am she pitched up to the box and after 20 seconds
of bobbing in and out she finally took the plunge and went inside.
As is usual, once she is inside the male feels that he really
shouldn't be in her way, so being the perfect gentleman, he quickly
obliged and left her to it.
She didn't stay long, only around 12 seconds, but at least he
had achieved his goal, and she has now seen inside the box.
Having never seen this activity before from a side angle it was
interesting to watch, as in previous years all we have been able
to see is the top view:
Excellent stuff, and another box ticked on the Season
Checklist.
Hopefully this ritual will be repeated many times over in the
coming weeks and once she begins to feel comfortable with the box
she will start to visit and enter by herself.
The real question however is, does she like it? We'll only know
that over the next few days when maybe she will enter again
and then display some nesting shuffles.
You
can see the first entry this season by a female here,
and as you will hear, quite a loud noise is emitted by the male
when
she finally enters!
Today has been noticeable with one main change - the woodwork
classes have begun in earnest.
Nearly all of the visits this morning involved some quite long
and persistent hole pecking sessions, and the male in now pecking
from both sides, darting in and out of the hole as he swaps positions:
Although not shown in the video below, he was also adopting some
quite odd angles to get to the wood this morning:
And some times he was halfway in and halfway out:
A
clip of his handy work can be seen here. So why do they peck so long and hard at nest box holes?
There is much speculation about this, but they are not trying
to enlarge it. The most widely accepted answer is the idea that
the wood is being tested, to ensure that it is sound and not rotten
so it will serve them
well
as
a temporary family home.
Some people also say they are smoothing off the
edges of the hole to make entry and exit easier for themselves,
and ultimately their offspring ... of course for the chicks, their
use of the entrance is a one-way trip!
At the height of the feeding frenzy just before the chicks are
due to fledge, wings on parents have been measured and shown to
have been reduced in length by anything up to quarter
of an inch. The loss of length being attributable to darting in
and
out
of
the hole some hundreds of times a day.
Another interesting
observation that can be seen from the side angle camera is the
male and his crown. He can get quite excited, or quite concerned
at times, and if you didn't know better you could assume he was
wearing some sort of flat cap hat:
There
were 126 visits to the box and 17 entries by the male along with
the one, but important entry by the female. The last recorded visit
was at 2.58pm.
And finally, a few shots from the feeders this morning when the
Blue Tits were enjoying some sunshine:
Rain is forecast for most of tomorrow, so
we'll see how they take to the damp conditions.
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