Great tits, helpers against oak processionary caterpillars


This video says about itself:

Oak Processionary Moth nest – pupation

28 July 2014

It’s the end of July and this nest is full of cast final-instar larval skins still showing the toxic hairs which can cause severe irritation which protect any pupating moths inside the nest. The skin rash induced by the hairs was described by one researcher as “like nettle stings that last for two weeks”. Don’t try it!

Translated from regional broadcaster RTV Drenthe in the Netherlands:

Monday, April 18th, 2016, 11:18

Emmen uses great tits in combat against oak processionary

EMMEN – The municipality of Emmen has hung in recent months 120 nest boxes to combat the oak processionary caterpillar. The nest boxes are meant for great tits, which eat the caterpillars.

The boxes are mostly hung in places where in recent years there were many nests of the oak processionary caterpillar …

According to the municipality of Emmen, the great tits have found a way to eat the caterpillars. The birdies wipe the stinging hairs off the caterpillars. …

The stinging hairs of the caterpillar are harmful to humans and animals. The hairs are fired in case of threat and can get into the skin, eyes or respiratory tract.

Rare damselflies back in the Netherlands


This Dutch video says about itself (translated):

April 15, 2016

In the east of the Netherlands last year was discovered a small population of pygmy damselflies (Nehalennia speciosa), an extremely rare damselfly species, reports Nature Today. The last times the pygmy damselfly has been found in our country were 1912 and 1955. The species has greatly deteriorated in all of Western Europe by damage to nature and the environment.

The damselfly genus Nehallenia is called after a Celtic, or Germanic goddess, worshiped when the present Netherlands was part of the Roman empire.

This is the smallest damselfly species of Europe. The video shows them mating.

Razor clam digs in fast, video


This video shows a razor clam digging fast into the sand.

Joeri Lamers in the Netherlands made this video.

First butterflies of spring, video


This video, recorded 9-10 April 2016 on Overflakkee island in the Netherlands, shows some of the first butterflies of spring: peacock, comma and speckled wood.

See also here.

African beetles’ mating season


This video says about itself:

Beetles Brawl For Female Attention – Africa – BBC

8 April 2016

When one monkey beetle has his sights set on a female he becomes engrossed in a battle for her attention.

Museum biologists at work, video


This 7 April 2016 video from Leiden in the Netherlands is called At the laboratories of Naturalis Biodiversity Center.

Andrena clarkella bees, video


This Dutch video says about itself (translated):

April 11th 2016

The Andrena clarkella mining bee nests in the ground. The female makes in the sand a long corridor with a few brood cells for the eggs. A male Andrena clarkella mining bee can be seen top left of the screen. Filmed by Everdien van der Bijl.