In the beginning of August I shot the image of a drab warbler near a pond in southern Brandenburg. I did not realize the bird at that moment, as the whole willow bush in a otherwise highly agricultural land was quite busy with migrating birds, e.g. Sedge Warbler (Acrocephalus schoenobaenus) well. I think, I remember that “Marsh Warbler” was my first thinking? The slender appearance on one of the images would be a hint. But he greyish tinged legs, the shape and colour of the bill and especially the head pattern made me think of a Sylvia-Warbler. The brownish cap could be some pollution/ pollen, yes. But I thought this not very useful in August. What really irritated me were the colour and the contrast in the tertial fringes, which was the reason I had the impression that the bird looks a hybrid between a Blackcap (Sylvia atricapilla) and a Common Whitethroat (Sylvia communis). Looking at the images with 2 month in between, I was more in the direction of thinking of a young Blackcap due to the whitish eyering and the shape of the bill. Continue reading Young Warbler as an ID-challenge in southern Brandenburg in Germany
Spending the yearly vacation this time in the Netherlands, it was possible to look for birds as well. Besides an observation of an adult Lesser Yellowlegs (Tringa flavipes) north of Callantsoog in the newly established nature reserve “The Nollen van Abbestede”, I could see a lot of young birds – the so-called pulli – of various birds on the sea shore.
Identification of Pulli – young birds in general – not only on the coast of the Northern Sea – is not an easy task. Sometimes you are lucky with the „Handbuch der Voegel Mitteleuropas“, by Urs N. Glutz von Blotzheim. For waders some useful information you will find in “Strand- und Sumpfvögel Europas – Einschließlich Nordafrika und des Nahen Ostens”by Wolfgang Makatsch. Some nice information with images of clutches, locking jaws, dune-plumage, some photos of the nursery of the birds you will find in “Vogelnester : nach Farbfotos erkannt” in the selection Sauers Naturführer by Dr. Frieder Sauer. Besides that, there are little comprehensible images Continue reading Pulli – young birds on Northern Sea Coast