Raptor time

The Oslo Honey Buzzard nest that I have been following this summer is now empty (as far as I can see) although if you have been following the Sussex Honey Buzzard nest webcam on YouTube then you will know that the young can potentially still visit the nest four weeks after taking their first flight so my lack of sightings is definitely not absolute proof that they are gone. I will of course have a loooong but hopefully interesting post on the nest later in the autumn.

At the same time I no longer found any HB at the nest site I was following (I also know of another successful nest in Oslo this year) I noticed multiple juvenile HB over Maridalen with some birds definitely migrating in a southerly direction (both south east and south west) and other birds seemingly just enjoying thermalling, soaring and landing in the woods where I would love to to know what they were doing. It therefore seems clear that the species has had a good, and early, breeding season in southern Norway in 2026.

All the time looking at the sky has resulted in quite a few other raptors with seven species in Maridalen and a session at Årnestangen yesterday giving ten and I have seen 12 in total this last week. Nothing too exciting yet but juvenile HB in a direct flight have a very harrier like jizz and many birds also have narrow pale rumps so I have been eft scratching my head quite a few times.

Årnestangen yesterday was apart from the raptors a very strange affair with the extensive mud/sand flats almost completely empty of waders with just two Dunlin and two Greenshank. Svellet though has been far more productive with large numbers of both waders and dabbling ducks. A Broad-billed Sandpiper here was the undoubted highlight and a species I had forgotten about completely when in my last post I moaned about the wader species I had yet to see this year.

Great White Egrets have now turned en masse at Nordre Øyeren with 12 being the highest, and a record, count. I have had to content myself with just eight including a flock of six.

a migrating juvenil Honey Buzzard (vepsevåk) which is a grab from this video

the pale Common Buzzard (musvåk) in Maridalen. It has been around a few years now but for such a distinctive bird I see it quite infrequently.

my first Great Grey Shrike (varsler) of the autumn on the early date of 31 August. a lack of a wing bar shows it to be an adult and the all black bill probably a male

six Great White Egrets (egretthegre) and some Cranes (trane) at Svellet

and two at long range at Årnestangen

a video of a male Hen Harrier (myrhauk) at Årnestangen:

and a Marsh Harrier (sivhauk) eating a young gull at Svellet:

Back again

I felt a need to post, no matter how briefly, a few days ago as a very close friend of min recently took his own life and it has been a very strange and emotional time and a reminder to me of the need to communicate. Birding has been, as it always is, a good way for me to keep myself in balance and I have not been spending time in front of the computer or editing photos.

I have this evening found a few more photos and videos from the last week in Maridalen which show a bit how things are there. Autumn migration is starting and the hope is always for something very exciting to turn up although currently I am more aware of the breeding birds disappearing.

adult Black-throated Divers (storlom) on Maridalsvannet. The single small juvenile that was on the lake earlier in the summer has disappeared but up to 11 adults have been on the lake

In this video of Red-throated Divers (smålom) which have not bred on Maridalsvannet but have now moved here from their nearby breeding ponds you can see a juvenile that is begging for food by stroking its parents throat with its bill

a visit to Svellet with Jr Jr to give her some driving practice (her driving test is coming up) looked like it would be very promising but there was no birding gold at the end of the rainbow

a caterpillar of a Pine Hawk-moth (furusvermer) Sphinx pinastri

and the caterpillar of Elephant Hawk-moth (stor snabelsvermer) Deilephila elpenor shown in the video in my last post. I found both of these wandering on roads and they are searching for places to turn into a pupa

Back to Svellet

The Beast turns 8 in September which coincidentally means that according to all that dog/human year malarkey he and I are the same age (at least for now). I guess there have been a few thousand morning walks he has taken me on over the years and we have seen a few interesting birds in the area where we live with Pine Grosbeak probably being the best. Yesterday morning though we added a new species with a Wood Warbler singing in the local wood. Although the oak dominated wood may be suitable as a breeding locality I am sure the bird was a migrant. As such I think it is only the second time I have come across a singing spring migrant (not that I have come across any non singing ones either). And that got me thinking - why do I hear many singing migrant Chiffchaffs and Willow Warblers but not Wood Warblers? Is it because Wood Warblers don’t often sing on migration or is it just because there are so many, many more Chiffs and Willies that you are so much more likely to encounter one of them?

 

Svellet was the subject of my attention yesterday and whilst water levels have only risen by 2cm since yesterday and 4cm since Monday there was a considerable reduction in the number of birds. And I was able to watch that number more than half when a young Peregrine had a go at some Wood Sandpipers which of course all flew off but also never returned.

Over the past couple of weeks I have seen the waders frequently flying around due to a raptor (most often unseen) but always landing again but what I observed today clearly shows that migration awaits and the birds clearly have an unavoidable urge to keep heading north.

We have a couple of days of rain ahead of us and also southerly winds after aperiod of cold northerly winds so we may still have some mighty experiences at Svellet but it will definitely be a question of quality rather than quantity now.

I also walked out to the end of Årnestangen which was a rather quiet affair on the bird front with not a single waders at the tip but there were two butterfly surprises with my first Swallowtail and Painted Lady of the year which were not what I expected on a quite cloudy and not that warm day.

Svellet from the east

and from west looking north 13 May 2026

and looking south

and Årnestangen

In Maridalen the Lapwings continue to surprise positively with 3 broods seen - 4 and 1 were on open ground and fully accounted for but another single youngster popped out of long grass and there could definitely, and hopefully, have been more there. Two females are also on new nests and a pair were displaying so there may be yet another nest to come. They all still have to survive more farmer activity and foxes and crows but I think we are in a surprisingly good place.

my first Painted Lady (tistelsommerfugl) of the year. A faded but otherwise undamaged individual

whereas the colours of my first Swallowtail were perfect it had clearly already been attacked by birds and had chunks missing from the back of its wings

Svellet has never, ever, been mightier

While I was away from Oslo The Mighty Svellet has just carried on getting mightier and mightier. On Saturday a new Norwegian record count for Wood Sandpiper was made with 1800 birds counted (the previous record of 1395 birds on 11^th May 2021 was of course also from Svellet) and then yesterday the record was smashed again when 2200 were counted!! Today I estimated a minimum of 1750 birds but there were new flocks regularly arriving from the south and others looking like they were leaving to the north so the true numbers were probably a lot higher. Surprisingly no other species passed 100 and whilst the peak passage of Greenshank has clearly passed, the numbers of Ruff, Dunlin and Ringed Plover may still increase. My list can be seen here.

I had been hoping for these sorts of numbers (and conditions) but last week really feared it would not happen as water levels rose however they have since then only increased by around 5cm a day and it must be said things are perfect now. It surely cannot last for that much longer so we always have to enjoy it whilst we can. It is a surprise that nothing rare or to be honest scarce has been found but with the distances and lighting being as they are it would need to be something rather obvious like a Black-winged Stilt.

Svellet from the east. Water levels have risen a bit but there is still lots of mud and shallow water

from the west looking north

and looking south. Most birds were to the right of the picture as can be seen in this video:

In Maridalen I recorded my 150^th Oslo species of the year with Common Crossbill. That it should take so long to see the species (it was also my first in Norway) is because all the cones that caused last year to be so good for the species are now empty of seeds and all the many thousands of Crossbills that were around Oslo 12 months ago are now somewhere else in Fenno Scandinavia where there is a good crop of fresh spruce cones. Today’s birds were a pair though and I heard song so maybe they are thinking of breeding?

Regarding the Lapwings I saw a single brood of 4 today which it would be natural to assume is one of the broods I saw last week but as they were so small I am not sure if they are a new brood. There were 8 adults in total with none other seemingly guarding young in the grass but a pair was displaying and nest scraping and another female looked to be sitting on a nest (but not the same nest from 2 posts ago which now seems abandoned).

Loads of birds!

I frequently am accused of being overly optimistic in my bird forecasts and expectations but I see that my predictions in my last post for Svellet were actually very pessimistic. The wader fest is far from over as the water levels have stopped climbing (at least for now) and there clearly is enough food available as wader numbers which fell on Wednesday rose sharply yesterday (when I did not visit) and were still high today. Viewing conditions are far from great which is par for the course there but today I was able to pick out a Temminck’s Stint although another one on nearby Merkja was much easier to view (as were two yesterday evening which I twitched at Fornebu).

Yesterday gave me a non-wader mass bird event and a quite unique one at that. Very large numbers of Willow Warblers have been seen crossing the fjord from Nesodden and they have been then concentrating at Østensjøvannet. It would appear that frost nights to the north (temperatures were under zero on Tuesday evening as we drove home form owling) are stopping the nocturnal migration of the Willow Warblers and they seem to be stopping their northward journey in the Oslo area and then continuing northwards during the day and moving whilst also searching for food. There is not an overabundance of insects yet in Oslo but Østensjøvannet clearly has good numbers. There were over 1000 Willow Warblers as I walked around the lake and every tree and bush was dripping with them. They were also feeding in long grass, on the short grass of playing fields, on a newly ploughed field, on the paths and many were sallying after insects in the manner of a flycatcher from any available perch including fence wires. It truly was an amazing experience both visually and orally as birds were also singing everywhere. There were not many other species that had clearly arrived with the WWs except for Blackcaps which were more common that normal but not in exceptional numbers. That there were lots of insects to eat though was shown by House Sparrows that were flycatching and Bramblings taking insects alongside the WWs in bushes.

This video gives some idea of how it was but does not pay the experience the justice it deserves:

Svellet 8th May as viewed from the eastern shore

and viewed from the west - still lots of mud and shallow water which clearly has more food than I expected after the water levels rose so quickly

A really heart warming sight at Østensjøvannet are the Black-headed Gulls (hettemåke) that are nesting again. There are three small colonies (including this one) and scattered single nests around the lake and the total number of nests may not be much more than 50 but this is in stark contrast to last years dire situation but also the 2000 odd pairs that used to breed here. Fingers crossed that there are lots of fledged young in a month or two. There is also a good colony at Sognsvann - it would appear that the two most visited lakes for recreational use are attractive to both humans and gulls - but I have yet to notice any nesting on the fjord so I fear that overall things are not good for the species

yesterday and today I could not see a single young Lapwing (vipe) in Maridalen but there is a new nest although as this field was only ploughed on Sunday I am not sure whether she is incubating or just in the egg laying phase

and the Mute Swans (knoppsvane) are now finished with nest building and are on the nest although I do not know whether any eggs have been layed yet

Sorry David

Regular readers of this blog will be aware of my exceptional ability to fail to take exceptionally good videos. I am not talking about my videos being shaky and out of focus as that at least means I took the video, no I’m talking about all the videos I fail to take because of my continued inability to press the record button.

 

Yesterday evening saw yet another monumental f**k up and quite possibly the all-time best video that I never took when I had a Great Grey Owl at about 15m range with a large vole in its bill. The vole was still alive and its feet twitching when the owl delivered the killer bite to the head, ate the head and then swallowed the body all whilst looking at me. The light was good, it was in sharp focus and I was holding the superzoom steady but had I pressed record? I thought I had, I even thought I had checked the red circle was showing in the top right corner of the view finder. But no, of course, I hadn’t and I am still kicking myself.

We are talking about a video (that wasn’t) so incredibly good that David Attenborough would have paid me for the honour of narrating it.

 

This video which was taken immediately after has me expressing my utter contempt for myself whilst the owl looks on….

Great Grey Owl (lappugle) just after it swallowed a big vole but you'll just have to take my word for that as I FAILED to film it

This happening arose as Jack accompanied me on a trip to deepest Hedmark to try to get to the bottom of the GGO situation anno 2026. We checked 4 platforms and 2 old Buzzard nests without finding any incubating GGs. At the platform that I have visited twice before in April the pair were present and the female was very aggressive with bill clicking beginning when we were 50m away and had yet to see her. She also adopted a threat posture and looked like she might fly at us at any moment. Her bill clicking also brought the male in who sat a bit less open but also clicked at us. This aggression from GGO when they do not have young to protect is most unusual (perhaps unprecedented) as is the fact that the pair clearly remains in breeding modus but have not yet laid eggs and it is surely too late now.

the female in threat posture

the male

the males

the pair with the female on the left

The hunting bird we saw was an encouraging sign but the fact it ate the vole rather than flying off with it to feed a mate leaves me not knowing whether or not it was a breeding bird. I do know of an occupied nest but have yet to visit that site as it has been important that I find my own birds but I may have to give up on that hope for this year.

We ruined our finger nails scratching on trunks under every woodpecker hole we saw with only a Great Spotted pecker ever flying out but at a nestbox we did finally find breeding Tengmalm’s although it was Jack who scratched so I still do not know if I have a technique that works.

Other birds seen were a couple of Capers but again females, Black Grouse, Wryneck and Woodcock but it was a cold day with temperatures falling below zero as soon as it got dark and that probably caused less activity than we could have hoped for.

 

we had two roadside sightings of Moose

 

Back in Oslo this morning I was faced with the realisation that springs undoubted highlight - the wader migration at Svellet - is pretty much over. Water levels rose another 20cm yesterday to 4.03m and whilst there is still mud and shallow water there are clearly few remaining areas where there is food in the mud and wader numbers were nearly halved from yesterday and many were just roosting rather than feeding. It is a travesty that such an internationally important staging post for shorebirds cannot be managed better but that pretty much sums up «conservation» in the world’s richest and «best» country.

Svellet 6th May. There is still (dry) mud but water levels have risen a lot

In Maridalen it looks like the 3^rd Lapwing nest has now hatched with there being four young near it and no bird still incubating and yesterday’s brood of three is actually four but I never saw these two broods simultaneously so there remains a very small chance that one single brood of four 1-2 day old young was able to cross a ditch.

a brood of day old Lapwing (vipe)

rarity of the day was this all black corvid on the Lapwing field. I concluded with it being a 2cy Rook (kornkråke) rather than a Carrion Crow (svartkråke) but it ain't always straightforward especially at distance in heat haze. Interestingly the Lapwings which always tried to chase away any intruding Hooded Crows left this bird alone

Rising too quickly

Wader numbers continue to increase at Svellet but today the water levels also rose by a whole 18cm. If this continues then things will soon change from mighty to morbid. The first calidris, a Dunlin, has now turned up and we can only cross as many fingers and toes as possible and hope we have at least another week of fun.

In other news there seemed to be a small fall of Redstarts, Whinchats and Wheatears today which allowed me to come up with the hilarious line “it’s starting to get chatty”… I’ll get my coat.

Svellet today 5th May

and the scenes yesterday:

At nearby Merkja a pair (one of two present) showed well today

And in Maridalen it was a red letter day with the first Lapwing young noted. Two broods were seen with a minimum of 3 and 1 young and another birds was still on the nest having been saved by the farmer when he ploughed a couple of days ago. There were 10 adults in total with another two females just wandering around on their own so there is still a chance for further, late, breeding.