This year hasn’t been that good for butterflies yet with
lots of rain and when there is sun it is often windy. I have consequently not
spent much time searching for them but as with all things with wings sometimes
they come to you. Yesterday whilst driving in Maridalen I saw a large black and
white butterfly flutter in front of the car. For the first time (that I can
remember at least) I emergency stopped for an insect although it soon transpired
I had all the time in the world. The butterfly, which was a Poplar Admiral
(ospesommerfugl) was attracted to the road and was clearly finding something
good, probably salt, on the tarmac. It managed to avoid death at the hands of
passing cars, although all slowed down as they were clearly interested to see
what I was up to, and it kept landing and showing itself off from all angles.
Whilst this was happening a Swallowtail flew over although unfortunately did
not stop. So arguably the two most spectacular Norwegian butterflies at the
same time and in the Dale 😊
Poplar Admiral (ospesommerfugl). Only the fourth time I've seen one and by far and away the most cooperative. They are famous for being attracted to dog sh*t but seems tarmac roads are just as attractive
I paid a visit to Østensjøvannet yesterday hoping that the rainy
weather might have produced something (a Black Tern turned up at Årnestangen at
the weekend) but as with all my rain fuelled visits this spring there was not
even a Swallow to see. Something is clearly up with the lake with there being
no insects hatching and therefore no Swallows, terns or most importantly gulls
to feed off them. I reckon that this is the reason that Black-headed Gulls, which
used to breed here in a colony of many hundreds of pairs, have now more or less
completely abandoned the lake for breeding. It did look like there were two nesting
pairs though which was a surprise although whether they can raise young is
another thing.
Even if there were no insect eaters, a couple of male
Gadwall in eclipse plumage were most unexpected.
male Gadwalls (snadderand) in eclispe
Coot (sothøne) parent and young
when at Østensjøvannet it is rude not to take a picture of a Great Crested Grebe (toppdykker)
Maridalsvannet has been having lots of hatching insects over
the last few weeks with many Common and a few Black-headed Gulls hawking them.
There have also been Common Tern which today peaked at 6 birds which I am sure
is a record here. There have also been lots of Swifts, Swallows and House Martins
and the odd sighting of Sand Martin. Today there three birds including a pair
mating on wires right above my head. I never saw them visiting potential nest
holes although they have previously bred in holes between stones on a nearby bridge.
I did foolishly have another nocturnal outing last night but
with nothing to show for it I think this must be my last of the year, in
Maridalen at least.
mating Sand Martins (sandsvale)
Swallows (låvesvale) collecting nesting material. The bird on the left is ringed. It is quite late to be nest building
I haven't been able to make much out of the ring not even which country
Marsh Warblers (myrsanger) have become quiet as they pair off
there are now two Pink-footed Geese (kortnebbgås) at Maridalsvannet. At least one of them is paired to a Greylag and maybe both
These two Mallard (stokkand) chicks are very different
In my last post I wrote that I felt I must have found the Hobby
nest – well today I am less sure. Per Christian and I joined forces to try to
locate it once and for all but left just as confused as before. We located four
different old Hooded Crows nests in a very small area without seeing any bird
on any of the nests. Then we heard the male calling and he appeared overhead
with prey in his talons. The female then called and flew out of the trees
towards him. There was lots of calling but we couldn’t exactly what happened
but there was clearly a food pass. The male then sat openly calling whilst the
female must have been more hidden whilst presumably eating the prey item brought
to her. The male kept calling and flew around a bit before the female then flew
out of a tree and calling and disappeared amongst the trees. During all this
time we had been keeping an eye on the old crows nests but did not see the
female coming or going to any of them. So, either we are not observant enough
or else there is a 5th nest that we have yet to find.
this is the old Hooded Crows nest that I felt certain was being used by the Hobbies but I am now less certain
here, what I think is the male, was perched in the next door tree
A check of the Honey Buzzard nest from last year revealed
fresh green branches on it although in nearly 4 hours of watching the nest and
skies about I failed to see a bird. So here I have found the nest but not seen
the birds…. I do not know whether adding of new material of nest means that
there has to be a pair of if just a single adult will add material whilst waiting
for their mate to return but this does give high hopes for yet another chance
to follow a breeding pair.
a branch with fresh green leaves can be seen on the right hand side of the nest. It is possible that a bird could have been on the nest unseen to me but I think observed the nest long enough that I would have seen some movement
Even though I failed to see any Honey Buzzards I did have good views of a female Three-toed Woodpecker whilst waiting.
female Three-toed Woodpecker
here it has got hold of a larve
and here it is swallowing it
The Great Northern Divers remains and has now been frequenting
the northern end of the lake in the last few days.
the Great Northern Diver (islom) is always close to the shore
There are now two Common
Rosefinches in Maridalen, both brown, 2cy males and both seemingly unpaired.
2cy male Common Rosefinch (rosenfink)
The Lapwings are now disappearing in the high vegetation and
yesterday I saw none but today the male of the family was clearly keeping guard
so I assume there are still some young although I have no idea whether there is
still a bird sitting on a nest.
A new Marsh Warbler reminded me that “night singers” can
still turn up but I really don’t think I am motivated for any more nocturnal trips.
My negativity towards nocturnal outings didn’t even last a
day and Wednesday night saw me out for more pain. It all started when a Great
Reed Warbler turned up in a «what is this?» posting on Facebook. It was not in
Oslo although it was close to Oslo Airport and normally I would not have gone
for it. However, as it happened Mrs OB was landing there in the evening and Jr
wanted to surprise her by picking her up and getting some driving practice in.
So a little «5 minute» detour on the way home was in order?
The bird could be heard from the car park and when I walked
the 100m to where it was the song was so loud and so constant that I seriously
considered the whole thing was a wind up and someone had placed a loud speaker
in the reeds! This thought was only strengthened when I was able to walk to
what must have been only 5 metres from the bird and it just carried on singing
and remained invisible! Eventually though it did clearly change position and
then finally flew into a bush where it could just about be seen.
It
is a while since I have heard a GRW (this is my third in Norway) and I had
forgotten just how loud their song is. In the video you first hear the song and then get a glimpse of the bird
Great Reed Warbler (trostesanger) - a screen shot from the video
Buoyed by this I then decided to do just one more Oslo night
singer trip. Maridalen had nothing new to offer but in Sørkedalen the Blyth’s
Reed, Oslo #186, that had been quiet in the afternoon was now singing his heart
out in the garden of a farm at midnight. Add to that multiple Marsh Warblers
and a Reed Warbler and I had a four acro night. I do think this will
be my last trip though unless of course someone else finds something for me to
twitch.
the Reed Warbler (rørsanger) that is singing in the video above. As can be heard teh bird had a very varied song and I also do not think it looks completely right for a Reed. Could it have some Marsh genes?
In
Maridalen I feel I must have found the Hobby nest although am still to see a
bird on it (this was also the case for a long time last year).
Hobby (lerkefalk) presumably the male
I
could only find two Lapwing young with their parents yesterday and saw no other
birds although the crop has become so high that the incubating bird would be
hidden if it still present.
mum Lapwing (vipe) on the left and what seem to be now the only two remaining young which as can be seen are soon fully grown and were both frequently flapping their wings