An annotated, amended and revised list of 18th century sperm whale stranding records from the North Sea, Skagerrak and Kattegat coasts: A ‘retro-cetological’ approach using searchable digitised newspapers


Searchable digitised newspapers, consulted to detect information on 18th century sperm whale strandings, revealed several hitherto overlooked records for the British (16), Dutch (1), Danish (1) and Norwegian (1) sections of the North Sea coastline as well as further details on already documented records and verified the species assignment of earlier only insufficiently documented records. A revised list of records is provided.

Fatal attraction: The death of a solitary-sociable bottlenose dolphin due to anthropogenic trauma in the Netherlands


The death and behaviour prior to death of a bottlenose dolphin (Tursiops truncatus) known by the name of “Zafar” created significant national and international public interest. The animal was first observed in the Netherlands on the 2nd of May 2020, closely following a boat from Brittany, France, all the way into the port of Amsterdam after passing the locks at IJmuiden. After a day of residency in the industrial port of Amsterdam, the animal was successfully lured back into the North Sea.

The simplex and other forms of the upper third molar (M3) in the common vole (Microtus arvalis) in Zeeland, the Netherlands


The frequencies of the various forms of M3 (simplex, transient and normal) in common (Microtus arvalis) voles were determined in different regions (all former islands) in the province of Zeeland, the Netherlands. A possible higher incidence of left-sidedness of simplex and transient M3 forms was also investigated. The frequency of simplex forms of M3 has not apparently been studied in any other part of the Netherlands, except for the north. Common vole specimens (1254 skulls) from owl pellets that were collected between 1995 and 2010 were studied.

A new Dutch Red List!


Last month, on 3 November 2020, the Dutch government published a revised Red List of Mammals of the Netherlands in the Government Gazette. This is the second revision after the Red Lists of 1994 and 2006, so it can be called the Third Dutch Red List of mammals. Commissioned by the Ministry of Agriculture, Nature and Food Quality, the Dutch Mammal Society published a report, which formed the basis of the Red List published by the ministry (van Norren et al. 2020). The Red List is an indicator of the health of the populations of wild mammals.

Jaarverslag Werkgroep Kleine Marterachtigen Bommelerwaard 2020


In de Chinese jaarhoroscoop was 2020 het jaar van de rat, voor de Bommelerwaard was 2020 het jaar van de das. Strikt genomen geen ‘kleine’ marter en zelfs de grootste die in Nederland voorkomt. Hiermee wordt direct duidelijk dat de ‘Werkgroep Kleine Marters Bommelerwaard’ zijn interessegebied heeft verbreed en ‘Marterwerkgroep’ wellicht meer op z’n plaats zou zijn. Echter, gezien de naamsbekendheid die de werkgroep in korte tijd heeft bereikt is hier niet voor gekozen. Steeds meer mensen weten de werkgroep te vinden voor het doorgeven van waarnemingen: dank daarvoor!

Kijk op Exoten 33


Kijk op Exoten, nummer 33, december 2020

De nieuwsbrief Kijk op Exoten is het communicatiemiddel dat alle projectpartners gezamenlijk inzetten om vrijwilligers en professionals in Nederland te informeren over exoten. 

De huiskat beschouwd als exoot
Chris Smit (Rijksuniversiteit Groningen) en Jasja Dekker (Jasja Dekker Dierecologie)