The sightings and occasional thoughts of an English birder in Oslo
Saturday, 11 December 2021
More Grozzas
Too many posts on, and pictures of, Pine Grosbeaks
will end up getting boring I guess but they are amazing birds and it might be a
decade or more before I get to see them like this again so I am happy to keep
seeking them out. And to be honest there is not that much else to see in Oslo
just at the moment.
Despite the best efforts of the Grosbeaks and many
hundreds of Fieldfare (but still no Waxwings) there are still enormous amounts
of rowan berries to find so we could have birds around for a good while. There
are also unusually high numbers of Bramblings around who are also exploiting the
berries and a few Redwings – it is very rare that Redwings spend the winter
around Oslo.
An interesting thing I have noted is that the Grosbeaks do not like to be joined by Fieldfares. A flock of Grosbeaks eats quietly and methodically but the Fieldfares make a lot more noise and move around far more quickly. If a flock of Fieldfares descends on the same trees as the Grosbeaks are in then the Grosbeaks get spooked and the flock breaks up and the birds fly up into nearby trees calling. They can remain calling for a long time and the flock remains split up. I have previously written how single birds can call a lot (as though they are seeking their kin) but that flocks are often completely silent and this can mean the flock struggles to form again. I noticed that a group of around 10 birds were quietly feeding and a single bird flew over slowly and calling a lot. The flock didn't respond and the single bird did not see them and just flew over still calling and still lonely.
There are also good numbers of insects eaters still
despite the cold spell and Goldcrests seem to be still here in higher than
normal numbers. A Long-tailed Tit down town though may have been a sign of
birds struggling to find food.
Pine Grosbeak (konglebit) in the snow
in front of the Radisson Blu in downtown Oslo
this male is showing off his best side
with Grefsenkollen as the backdrop
size comparison with Fieldfare (gråtrost)
and with Brambling (bjørkefink)
Bramblings also eat just the seeds
whilst Blacksbirds (svarttrost) and other thrushes swallow the whole berry
Fieldfares
Redwing (rødvingetrost)
Goldcrest (fuglekonge)
it was methodically searching for insects or their eggs
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