Thursday 23 March 2017
Wednesday 22 March 2017
Tuesday 21 March 2017
Hornemann's Arctic Redpoll
The above is a Hornemann's Arctic Redpoll, it transpires! I saw this wee bird last Friday, thinking that it was 'just' an Arctic Redpoll. After sharing my photo with a far more knowledgeable person than myself, Tony Marr, it has finally been confirmed as a Hornemann's Arctic Redpoll (Carduelis hornemanni hornemanni).
It's a subspecies of the Arctic Redpoll and an extremely rare visitor to the UK and this area, the Outer Hebrides. Friday was a good day!
Friday 10 March 2017
Wednesday 8 March 2017
Grass-pulling behaviour in gulls
One of three Herring Gulls (above) on the croft this morning demonstrating grass-pulling behavior.
As per Nikolaas Tinbergen, ethologist and Nobel Prize winner: "... (this) occurs typically when two male birds meet on the boundary of their territories, as new birds are settling in. One or both of the birds may tear lumps of grass or moss from the ground with their bills. Grass-pulling Tinbergen concluded, was the result of a conflict between the desire to fight and the desire to flee. Each birds thwarted urges were 'displaced' into a new activity: Each in collecting nest material , it is true, but each is really doing to the grass what he would do to his opponent if he dared to get hold of it."
(New York Times, 7 April, 1974)
(New York Times, 7 April, 1974)
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