BEMMELEN R VAN, GROENENDIJK D, OVAA A & CDNA (2014) Rare bird species in the Netherlands in 2012. LIMOSA 87 (4): 216-221.

This contribution is a summary of the annual report of the Dutch rarities committee (CDNA) for 2012. In 2012, two new taxa were added to the Dutch list: Sooty Tern Onychoprion fuscatus and North Caspian Stonechat Saxicola maurus hemprichii. Other remarkable records were the second Steppe Grey Shrike Lanius lahtora pallidirostris, the second and third Eastern Black Redstart Phoenicurus ochruros phoenicuroides, the third Bufflehead Bucephala albeola and the fifth Bonaparte's Gull Chroicocephalus philadelphia. High numbers were recorded for River Warbler Locustella fluviatilis (7 records), Radde's Warbler Phylloscopus schwarzi (8 records), Buff-breasted Sandpiper Calidris subruficollis (11 records) and Olive-backed Pipit Anthus hodgsoni (18 records). All records of the latter species are from October and were part of the largest influx of this species in North-Western Europe ever recorded. Following recent advances in identifying flight calls from this species, the number of accepted records has grown since the publication of the annual report and may still grow. Out of a total of 511 species now on the Dutch list, 207 species (41%) are regarded as vagrants, with less than two records per year during the last 30 years. All records and their documentation can now be accessed through a new website: www.dutchavifauna.nl.

[pdf only for members] [dutch summary]