Category: Research Results

Dode jonge ooievaar

Again dead white stork with rubber bands

Dead white stork. Photo: Ferry Brands On 16 July 2023, an almost fully fledged white stork (Ciconia ciconia) was found under its nest in Megen, Noord-Brabant. Half an hour before the young was practising wing flapping. The stork was collected by the DWHC in Utrecht to investigate the cause of death.
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Roe deer with deer botfly

At the end of June 2023, a roebuck in the province of Limburg was put out of its misery and collected for research by the DWHC in Utrecht. The roebuck had swollen front legs, had difficulty standing, did not flee when approached and was shaking a little with his head (tremor).
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Bever zittend op een tak in het water

Results of examinating beavers in January and February 2023

In January and February 2023, the DWHC has examined four beavers for cause of death. Two animals came from the province of Noord-Brabant and two came from the province of Gelderland. One of the beavers from Noord-Brabant was stuck in a fence (see picture). The fence had been there for 50 years already, and in the
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kokmeeuwen, eerstejaars op voorgrond en adult op achtergrond

Update on mortality in black-headed gulls

By now it is clear that there is an increased mortality in wild birds due to high-pathogenic avian influenza (HPAI), mainly within populations of black-headed gulls. Halfway through February the DWHC and partner organizations published an article about the signs of this trend ( Read more

Eucoleus dispar found in Eurasian sparrowhawks

In both January and February 2023, a Eurasian sparrowhawk (Accipiter nisus) was examined by the DWHC. Both sparrowhawks had inflammations of the oral mucosa, and one also had an inflammation of the crop. In both birds these inflammations were caused by the nematode (roundworm) Eucoleus dispar.
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kokmeeuwen, eerstejaars op voorgrond en adult op achtergrond

Keep a look-out for Avian Influenza in black-headed gulls

At this moment – February 2023 – there are signals of high-pathogenic avian influenza (HPAI) causing death in black-headed gulls in France, Belgium, Germany and the Netherlands. We want to call on everyone to keep a look-out and to report findings of sick or dead black-headed gulls. Roosts and  breeding colonies,
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Houtduif

Mortality in pigeons due to Canker

This winter, the DWHC has received more reports on dead pigeons. These reports came from different parts of the country. Most reports concern wood pigeons, but collared doves and stock pigeons were also reported.
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Update avian influenza

Since October 2020 The DWHC and Sovon have collected more than 400 dead wild birds to be tested for avian influenza virus at WBVR in Lelystad, The Netherlands.  Most of the collected birds were individuals, because the NVWA deal with the reports of 3 or more dead waterbirds.
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