I thought I’d try out Østensjøvannet today as it still seems
to have good numbers of waterfowl and the reedbeds here are also a potential
spot for Bearded Tits. Waterfowl were there without doubt still lots of and if
the lake remains ice free then they could stay here for a number of more weeks.
A total of 42 Mute Swans (knoppsvane) was a notable increase over the breeding
population so there has obviously been an influx from other localities and the
birds seemed to be getting on well although a couple of the local males were
swimming around with their wings raised trying to look menacing. Also three
adult Whooper Swans (sangsvane) were clear immigrants.
Goose numbers are well down with Canada Goose now the most
numerous which was not the case 3 weeks ago.
47 Wigeon (brunnakke) was an impressive count for Oslo and
it was interesting that none of the males is yet in full breeding plumage. A
single female Shoveler (skjeand) showed briefly but I couldn’t find any Little
Grebes (dvergdykker) although there were 10 Great Crested Grebes (toppdykker),
two of which were displaying. There were two Pintails (stjertand) present. One
was a male in nearly full plumage. Interestingly this bird lacks the long tail
that one normally sees in males exactly as the bird that overwintered last
year. I had assumed that last years bird was a 1cy but assuming this is the
same individual it may be that this bird is slightly abnormal which would also
explain why it would choose to overwinter here and eat bread whilst its kin are
flying as far as North Africa for the winter. The other Pintail was with the
hand fed Mallards (stokkand) under the bridge exactly where I had another bird
three weeks ago. This bird was in female plumage and the single coloured bill
also showed it to be a female. I remembered that the bird from three weeks ago
was also in female plumage but that due to a two toned bill I had concluded it
was a young male. Now I began to doubt myself. However on checking my pictures
it is clear that the two bird theory is correct and that first a male and now a
female Pintail are hanging out in exactly the same place.
Male Pintail (left) from 3 weeks ago and Female Pintail (right) from today. Despite both birds being in similar female plumage not the male has a distint two toned bill and grey scapular feathers |
Quite a bit of work has been done over the last few years at
Østensjøvannet to remove bushes and restore areas that were originally marshy
which has included having cattle here in the summer to graze down the
vegetation. The area where the cattle have been has been name Snipe Marsh
(Bekkasinmyra) although I have always doubted its attraction for the said
species. Today however with the cattle gone and the electric fence taken down I
walked through this wet field and guess what two Common (enkeltbekkasin) and
more excitingly one Jack Snipe (kvartbekkasin) flew up with in usual fashion
the Jack flying up just a metre in front of me!
Surprise, surprise no Bearded Tits though.
short-tailed male Pintail |
the female Pintail |
all in a flap |
Great Crested Grebe |