The sightings and occasional thoughts of an English birder in Oslo
Pages
▼
Sunday, 20 August 2023
Norway’s rarest breeders
I have previously had two blog posts about my 24 hour
trip in mid June which resulted in a number of very exciting birds and
butterflies and I also wrote that “I literally stumbled on nesting pairs of
what must be Norway’s two rarest species of breeding birds”.
Those of you who have followed this blog for a while
may well have guessed that the two species were Ortolan and Rustic Bunting. Both
species have been on a steep and long decline in Norway with trapping for food
in passage and wintering areas being blamed. The official survey of Ortolan
resulted in only 3 singing males at 3 different sites this year so obviously
things do not look good for the future survival of the species. Things have got
so bad for Rustic Bunting that there is no longer any official survey and the
last breeding that I am aware of in the southern breeding grounds is from 2016.
However (and something I forgot when I made my bold claim), in the last
few years Rustic has started breeding in the far north of Norway in Pasvik on the border
with Finland and Russia so my claim only relates to the historic southern
breeding range.
I found the Rustic whilst searching for butterflies
in a forest bog. I was in the middle of the bog getting wet feet when I heard
what I was sure was the song of a Rustic from the woodland at the edge of the
bog. I forgot about butterflies and made my way to the woodland. The song was
coming from something like 30 metres into the woodland and as I made my way
towards it I was suddenly aware of intense ”ticking” which is a noise I have
heard before and knew straight away was from an angry Rustic Bunting. Quite
soon I saw the source of the noise and a female Rustic was in a tree by me and
then suddenly a male appeared. The intensity of their annoyance at my presence
meant either a nest or young nearby. As I did not hear any other birds (young) calling
then I think it was the nest (when I previously came across a young only just outof the nest it made a lot of noise) and I therefore made sure to check where I
was walking as I tried to put a bit more distance between me and the birds. They
calmed down but did not reveal where the nest was so I returned to the marsh.
It
was a bit strange that the male was singing when he should have had his focus
purely on feeding young. Either he was thinking of a second brood and trying to
get the female in the mood or it was a different, and unmated, male that was singing.
I heard a bird singing again later and I would actually think it more likely
that it was an additional male but cannot say either way. What I can say was
that it was an unexpected and fantastic experience and one that I had never
thought I would again witness in Norway. Finding these beautiful
birds on their taiga breeding grounds is really special 😊.
This video has the sound of the singing male and ticking pair.
The female Rustic Bunting (vierspurv)
and the male when he suddenly announced his presence right over my shoulder
I looked for Ortolans where I have always done so.
After a bit of waiting I thought I had heard a distant singing bird but was not
convinced. I cupped my ears hoping to hear better when a much closer bird flew
past me and made a call that I was quite sure was Ortolan. It landed in nearby
trees and as I went closer it started alarm calling. I walked back trying to
give enough distance that I would not be viewed as a threat but also allowing
me to see what was going on. Another bird suddenly appeared and also called and
I could see that both had caterpillars in their bills – clearly there were
young that needed feeding! After a little wait the female dropped down before
perching in a birch sapling and then dropping to the ground right by a
regularly used farm track. I was able to reposition myself and saw the
approximate area she flew up from. Walking along the track it was quite easy to
find the nest which was only half a metre from the track! There were 4 young in
the nest and all looked healthy but you have to wonder why they chose to nest
there when there are piles of branches nearby which I believe are left specifically
to offer protection for nesting Ortolans. I decided to contact the relevant
people to inform them of the good news of breeding and also to share my worry
for the nest given how close it was to where people, tractors and animals
regularly passed. The information was received with enthusiasm and I felt good
for my discovery. About a week later though it was reported on social media
that an Ortolan nest had been “destroyed” and the blame was laid at the feet of
“photographers”. Contacting the poster it was clear that he was referring to the
nest I had found and I felt very much that I was somehow being blamed. It was
also clear though that the use of the word “destroyed” was something that the
poster had himself chosen to use in an attempt provoke as he himself had not
seen the nest and had only received some information from the person I had informed
about the nest. Contacting him I heard a very different story – he had checked
the nest first 5 days after I had found it and he then found an empty nest with
absolutely no sign of either predation or destruction. As Ortolan young are
only in the nest for ca.12 days and the female broods them for 3-5 days then the
young I saw could very easily have been (and indeed their appearance I think
confirms it) more than 7 days old when I found them meaning that 5 days later they
would have left the nest and of course the nest would be empty. My attempts to
explain this to people who should know better fell unfortunately on deaf ears but
let us hope I am right and at least one brood of Norwegian bred Ortolans made
it in 2023.
the male Ortolan (hortulan) with food in its bill
and the female just before dropping down to the nest
No comments:
Post a Comment