Denmark’s drought is a boon for some insectivores, but others are struggling

Sunny, dry weather is wind in the wings of birds like the swift and swallow, common in Denmark.

Denmark’s drought is a boon for some insectivores, but others are struggling
Barn swallows in Helsingør. File photo: Steffen Ortmann/Ritzau Scanpix

But smaller birds such as tits, which feed off larvae, struggle in the dry conditions, the Danish Ornithological Society (DOF) writes.

Waders, birds that that wade in order to forage for food along shorelines and mudflats, are also likely to see lean times as a result of the current weather, which can dry out their habitats, the society writes on its website.

Furthermore, low water levels in marshy areas highly populated by birds makes chicks more vulnerable to attacks by predators.

“Most small birds have already suffered their first challenges. That happened back at the end of May, when the drought was not yet a serious problem. But now, after no significant rain for more than two months, there could be a real problem finding enough food for larva-eating birds like for great tits, blue tits and other types of songbird, because the larvae dry out on the drought and the heat,” DOF biologist Knud Flensted said via the organisation’s website.

This year’s conditions are in contrast with the wet summer of 2017, when it was swifts and swallows that struggled to find enough food for their young. This year, dried-out fields provide more optimal conditions for the small birds to find the insects they feed on.

Swift chicks are capable of surviving for periods without eating if their parents have to fly long distances to find food, but that has not been necessary this year, DOF writes.

For swallows, several broods with large numbers of chicks are likely if the stable weather continues.

But on the coasts, drought is a threat to several species of bird in marshy areas and on islands.

“Gradual drying out of the course of the summer in ponds and marshes is an advantage for many waders if their young eat insects that live in shallow water. But this year the marshes have dried out very early, so food reserves for lapwings, redshanks and stints have shrunk and, in many places, disappeared completely in breeding areas,” Flensted said.

“The drought has also meant that foxes have had easier access to many birds’ eggs and chicks. In particular where the low water has made it easy for predators to reach spots that would usually be protected against uninvited guests,” the biologist added.

Flensted also noted that such a difference between two consecutive summers is a natural variation.

READ ALSO: 'Three million' birds flew from Denmark since 1970s: report


How much will it snow in Denmark this weekend?

Winter weather arrived in spectacular fashion to coincide with the beginning of December this week. The weekend could bring more snow to parts of the country but probably less disruption than recent days.

Parts of Denmark have seen heavy snow in early December.
Parts of Denmark have seen heavy snow in early December. Photo: Bo Amstrup/Ritzau Scanpix

Recent snowstorms disrupted North Jutland in particular and Denmark in general, and more cold weather can be expected this weekend albeit severe, according to forecasts.

“We won’t see the Ragnarok-like weather we’ve seen in some places recently again this weekend, but it’s now winter weather and it has also snowed in several places overnight,” said meteorologist Frank Nielsen of the Danish Meteorological Institute (DMI).

READ ALSO: IN PICTURES: Early December blizzards disrupt Denmark

Cold weather on Friday and a low front across the North Sea will bring clouds and precipitation across Denmark from the west, Nielsen said.

That will materialise as cold rain or sleet in many areas but probably snow in North Jutland, he said.

“There could be between five and ten centimetres of snow north of the Limfjord,” the meteorologist said, referring to the waterway that cuts across the northern part of Jutland, including main regional city Aalborg.

“In the southern part of the country, an equivalent five to ten centimetres of rain could fall,” he added.

Friday’s temperature will be between freezing point and five degrees Celsius, with the north of the country falling in to the lower end of that range and the south the warmer end.

Mist and fog is forecast this evening, caused by various weather fronts moving over Denmark.

That could still be felt on Saturday morning, though it is likely to be a little warmer at 2-6 degrees Celsius. Mild winds could make that fell chiller, but snow is unlikely.

Sunday will see the temperature drop again, to 0-4 degrees Celsisu. Snow is possible, particularly on eastern coasts.

Strong winds in the east of the country and along the coasts will result in a “rather cold 24 hours,” Nielsen said.

Nighttime temperatures are expected to drop below zero throughout the weekend. Motorists are therefore warned to be alert to icy road surfaces.