Aigronne Valley Wildlife pages

Showing posts with label osprey. Show all posts
Showing posts with label osprey. Show all posts

Tuesday, 29 January 2013

Osprey eats Raptor...


Looking out of the bedroom window this morning I spotted the Buzzard [Buteo buteo] Buse variable I call "Osprey" busily eating something near to the field seed feeder...

Busy feeding... the white line is feathers!
I went into the guest room to try and get a picture that wasn't through the willow...
But these were the best I could get [at 800ASA in the poor light]... here it is pulling hard at some flesh.

First thoughts were that it had got a pheasant...
but we could see all ten of the Dopey Dorises...
had it taken the Jeremy?

Seven of Ten... the Dopey Dorises under the feeder...
I thought not... the trail of plucked feathers were too white... and then I saw the Jeremy in the field the other side of the Aigronne, parleying with some crows.
were there eleven females around then?

These two shots show why I call it Osprey ...
...the position of the white on the breast and head, front and, here, back... coupled with the colour of the wings...
make it look very much like an Osprey [Pandion haliaetus] Balbuzard pêcheur when it is upright on a post...
 especially by the étang!!

I wasn't going to investigate quite at that moment.... the rain was drifting in sheets across the meadow, in the strong winds!
The buzzard wasn't at all worried by a little rain... it just kept on feeding.
It was there for around an hour... eating all the time.
It then stood there... open beak and hanging wings... panting... trying to cool off...
[all birds do this after a very large meal... their metabolism is such that they heat up very rapidly after a good feast]
... before flying up into a carefully "fallen" tree...
where it rested a while before flying off.


When there was a break in the rain, I put my boots on and went to inspect the kill...




As you can see from the last of the above pictures, it was no pheasant...
not with feet like that!

It was a Barn Owl [Tyto alba] Effraie des clochers... possibly the one that was using our "donkey shed" this summer... who knows?
There was certainly nothing that could be described as identifiable remains of that one...
it was quite a dark morph... but you'd need more than was left here to see that...
the buzzard had eaten all but a few feathers, the pelvis and the feet!

It had also left the next pellet / stomach contents...

I found this when I moved some feathers... so I'm pretty sure that it doesn't belong to the Buzzard.


...that will give me a clue as to what the owl was finding...
not much probably, there are beetle wing cases in the pellet...
the whole valley is thoroughly water-logged...
it's no place for voles!!

There has been standing water since Christmas in all the grazing meadows...
the places that the owl is most likely to hunt...
and in the ploughed [and in some cases, planted] fields that are also in the flood plain...
there are vast open areas on "the tops"...
but even there, you can see the standing water!

This is a hard time for the night raptors that have a major diet of voles...
it is probably bad for the Little Owl [Athena noctua] Chêveche d'Athéna that lives up by Bezuard...
there will be few insects available...
it will be having a "diet of wurms".

If as I suspect, there has been a crash in the vole population....
it is the top predators, in this case raptors, that suffer first.

Our cat has only managed a couple of voles since Christmas...
and just before the last snow, the local Kestrel took a bird as prey off our front door.
So their pickings are meagre...
Baron has his tinned food and the Kestrel has switched to birds.
You should see them scatter when it is about... normally they ignore it!

The Barn Owls are unlikely to try that...

The Tawny Owl [Strix aluco] Chouette hulotte is probably OK up there in the woods...
there will be field mice around...
and possibly Bank Voles...
and probably an "invasion" of water displaced refugees...
so it is sitting pretty!

The Barn Owl can probably hunt on the fringes of the woods...
but it would not be instinctive...
so it is most probable that the poor Barn Owl here was either an older bird...
or one of this years young [the dried feathers will give me some idea]...
but, either way it would be starving and may have succumbed in the last snowfall.

The Buzzard is a well known scavenger and saw its chance of a good meal in hard times.

We can feed the small passerines, and some of the more adaptable insectivores...
the Robin was using the fat balls last year in the freeze...
but there is no way of feeding the raptors...
other than making sure there is a supply of passerines for those that will take them.

So, sad though it is, we will probably see fewer Barn Owls around next year...
they start breeding early in the year and, unless vole numbers increase rapidly...
they won't be able to feed two or three owlets...
so it will take a few years for a good population to build.

Apologies if you found this upsetting... believe me, I did when I discovered that it was a Barn Owl... 

but that's life... and our valley will find more Barn Owls coming by! In fact I have a very large nest box to put up... a Barn Owl box... it will be going in the trees by the Aigronne.

On a lighter note the "smell chequer" didn't recognise passerines... 
it wanted me to put pessaries!

Sunday, 31 October 2010

Old Friends

Yesterday on the way up the valley to Le Petit Pressigny we saw another osprey being mobbed by two crows. The Osprey - chocolate brown bird, white underneath - was not a lot bigger than the crows but with longer, narrower wings. It isn't just the fishermen who appreciate the regular re-stocking of the Aigronne, one of France's premier trout rivers.
Today we visited Beaulieu-les-Loches for the 'Fil et Bio' exhibition. Here we met an old friend - Jim the Mushroom Man, formerly of Leeds Farmers Markets and now based in Loches. He and his partner Philippe have 30 hectares of caves where they raise Japanese mushrooms - Shiitake, Oyster and Eryngii at the moment - and have just secured organic status. As well as Loches market, they sell from their shop at 45 Rue des Lilas.
Heading home, we saw and heard three young peregrine falcons spiralling around the steeple of the old abbey church, again being mobbed, this time by jackdaws.
Finally arriving home at 6:10 pm, it was almost dark and a little owl was calling. Then over the hill came a familiar trumpeting. A single crane grus grus (grue cendré) was heading south, grue-ue-ueing for his mates as hard as he could. According to the latest RSPB magazine, a bird can fly up to 70% further in V-formation than on its own, so this one could be in real trouble. We thought of several captions for this picture, such as "You fellows might have told me the clocks went back today!".

Wednesday, 27 October 2010

Osprey on migration

This afternoon we came out of the laiterie by chance, to see an Osprey [Balbuzard pêcheur] Pandion haliaetus heading across our meadow and away southeast. How lucky can you get!