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