© Arnt Kvinnesland
Bird observatories are busy again during the autumn migration season, when hundreds of thousands of Redwings leave Norway saying goodbye in their particular avian manner: repeatedly crying "tsiii-tsiii-tsiii" all night long.
September to October Norway sees off thrushes and finches. The autumn migration allows one to spot the flocks of rare eastern birds including Richard's Pipit, Little Bunting, Red-breasted Flycatcher, Yellow-browed Warbler and Pallas's Leaf Warbler. The extremely rare Tengmalm's Owl and Pygmy Owl turn up on islands in the West off Norway once every three years.