Barn swallows on video

In this 18 August 2016 Dutch video, wildlife warden Hanne shows barn swallows.

Flowers and stonechats video

This 20 August 2016 video is about Berkheide nature reserve in the Netherlands; its sand dunes, flowers, stonechats and other wildlife. And the North Sea close to it.

Dutch birds nesting in 2016

This 16 August 2016 video by BirdLife in the Netherlands shows the highlights of their ‘Beleef de lente’ program; including webcams at the nests of kingfishers, peregrine falcons, little owls and many other birds.

Black terns at desert island

This August 2016 video shows black terns trying to catch mosquitoes at De Kreupel desert island in the Dutch IJsselmeer lake.

Ms Debby Doodeman of Dutch birding organisation FOGOL today published a blog post with many photos on black terns and other wildlife at De Kreupel; seen during boat expeditions on 1 August and 6 August 2016.

The black terns are preparing for their autumn migration to Africa. They are already partly in their winter plumage, more whitish than their summer plumage. It is better to have a whitish belly than a blackish belly if you want to catch fish by surprise. In spring and early summer, they eat many insects. In winter, mainly fish. In late summer here at De Kreupel, they eat both fish and mosquitoes.

Black tern migration

This picture, by Dutch ornithologist Jan van der Winden, shows migration of an adult male black tern named Han from the Netherlands to Angola in Africa and back.

This 6 August 2016 video shows black terns resting on De Kreupel; while a coot passes.

Carp in the Netherlands, video

This 29 July 2016 video shows warden Hanne in Wormer- en Jisperveld nature reserve in the Netherlands, looking at carp.

Protecting migratory fish from predators

New hiding places for young fish

Translated from Dutch NOS TV today:

Human interventions have made it more difficult for fish to swim to the sea through rivers, canals and lakes. Sluices, weirs and dams are obstacles to the movement of fish between fresh and salt water and vice versa.

To keep the migration going, fish passages have been built near obstacles, but these lead to new problems. The passages are so small that fish have to wait for each other causing traffic jams. Especially small fish like juvenile eels and three-spined sticklebacks that way are easy prey for predatory fish and birds.

In and around the North Sea Canal something is done about that. In the vicinity of the passages concrete pots with holes are placed, in which small fish may hide. Today, the first pots are placed in the Noorder IJplas lake.

Housing sand martins, video

This 28 July 2016 Dutch video is about building an artificial nesting wall for sand martins.