Black walnut, from North America to Texel island?


The eastern black walnut on a Texel beach, photo by Ecomare

On 30 June 2015, Ms Sytske Dijksen of Ecomare museum found a nut on the beach of De Hors, in the south of Texel island in the Netherlands.

The nut turned out to be a eastern black walnut. Probably, the Gulf Stream had brought it all the way from Florida or elsewhere in eastern North America to Texel. These nuts drift well.

There are a few eastern black walnut trees in parks in Europe, but the nuts on beaches there probably have all made long trans-Atlantic journeys.

In 1995, for the first time an eastern black walnut was found on a Dutch beach; also on Texel. Since then, it was found a few scores of times in the Netherlands. They have been found in France and England as well.

Sandwich tern research on Texel island


This 29 June 2014 video is about providing young Sandwich terns with colour rings in Utopia nature reserve on Texel island in the Netherlands.

Ecomare museum on Texel reports today about sandwich terns of Texel.

More about research about Sandwich terns, ringed on Texel, is here.

Ever since 2012, 70 Sandwich terns have been seen on Texel which had been ringed in the south-west of the Netherlands. 16 birds had been ringed in the north-east of Scotland. Other terns (four individuals or less) came from Belgium, Griend island, Ameland island, Sweden, Portugal, Spain, Italy, or the Gambia.

In 2014, 88 young Sandwich terns were ringed at the nesting colony at Utopia nature reserve. Some have been seen again in England and France. Most one-year-old Sandwich terns spend their first summer in Africa, returning to Europe later. In 2015, more young Utopia terns were ringed.

A video about ringing these Texel Sandwich terns is here.

Rare sea slugs off Texel island


This video is called Cumanotus beaumonti nudibranch.

The Dutch marine biologists of Stichting ANEMOON report today about discoveries in the sea off ‘t Horntje on Texel island.

Biologists diving there discovered two sea slug species, rare for the Netherlands: Cumanotus beaumonti, and Elysia viridis.

Leucistic small copper butterfly on Texel island


This is a video about a small copper butterfly in the Netherlands. This individual has the normal colours for that species.

Leucistic small copper, photo by Klaas de Jong

On 22 May 2015, in the Krimbos woodland on Texel island, local people Henk Leyen and Klaas de Jong saw this butterfly. Mr de Jong made the photo. It is a leucistic small copper; looking much whiter than usually.

Large copper in the Netherlands: here.

Sandwich tern webcam and research on Texel island


This 29 June 2014 video from Texel island in the Netherlands is providing 100 young Sandwich terns at Utopia nature reserve with colour rings for research.

Translated from Wadden.tv on Texel in the Netherlands, with webcam link there:

Nature reserve Utopia

Since May 2015 there is a webcam in the Utopia area. The webcam is in the middle of the colony of Sandwich terns.

Through this webcam, you can also enjoy these beautiful birds while you are at home. Through this webcam also the behaviour and especially the food supply of these Sandwich terns is monitored. This is done by researchers of Imares.

Besides the Sandwich terns one can also see the common terns, Arctic terns and avocets.

Enjoy watching!

Latest news from the Sandwich tern colony

May 19, 2015: This morning Imares researchers put 10 small bowls in the colony. These bowls are among the many nests and in this way, the researchers hope to catch the droppings of the Sandwich terns. The dung is then collected weekly and analyzed. This way they can deduce from the dung which food remains there are still in it, so what the terns have eaten. Through visual observations (including via the webcam) it is seen that they bring different types of fish. But the terns also eat while on their way, flying, and that often remains invisible. So we know that they catch from the sea swimming worms and eat them, hopefully this is also confirmed by the investigation of the poo.

Spoonbill, heron nests counted on Texel island


This is a video about a spoonbill (featuring a grey heron).

Warden Erik van der Spek reports today that for the first time this year, spoonbill nests in De Muy nature reserve on Texel island have been counted from the air.

49 spoonbill nests were counted. There will be more, as birds are still arriving from the south. At the end of May, there will be another count.

In De Muy were three grey heron nests as well.

Spoonbill nest count at De Geul nature reserve: here.

De Geul in May 2015: here.

Texel spoonbill update, June 2015: here.

Great black-backed gull nest, first time on Texel island


This video is called Great Black-backed Gulls, long-calling. IJmuiden Harbour, The Netherlands, 15 December 2012.

Translated from Natuurmonumenten conservation organisation in the Netherlands:

Tuesday, May 12th, 2015

Natuurmonumenten has found a nesting great black-backed gull in nature reserve Drijvers Vogelweid de Bol on Texel. It is the largest gull in the world with a wingspan of about 170 centimeters. It’s officially the first time that there is a nesting great black-backed gull on Texel.

The great black-backed gull is a breeding bird in Scandinavia and a rare breeding bird in the Netherlands. There are no more than about 10 breeding pairs per year, eg in Groningen. In winter it is a common visitor, especially young birds are then seen on Texel. The great black-backed gull is adult only after four years and can breed from that age on.