Count the hedgehogs: Danish researcher calls for citizen science help

Danish citizens are being called upon to participate in a nationwide hedgehog count on Saturday, August 8th. This initiative, led by hedgehog researcher Sophie Lund Rasmussen from the University of Copenhagen, aims to gather crucial data on the distribution and numbers of hedgehogs across Denmark.

The call for participation comes amid concerns about declining hedgehog populations. Research indicates a 30% drop in hedgehog numbers in neighboring countries, prompting scientists to seek public assistance in monitoring the species. This marks the fourth consecutive year for the hedgehog count in Denmark, with approximately 14,718 people contributing to the tally in 2025, which recorded 21,000 hedgehogs.

In a separate environmental note, the article highlights a positive development for the European seabass (fjæsing) in Danish waters. A trial fishery in the Kattegat sea, conducted by the Danish Fisheries Association and DTU Aqua, reports a significant increase in the seabass population. Biologists suggest there may never have been as many seabass in the Kattegat as there are currently. The seabass, known for its venomous dorsal fin spines, can grow up to 50 centimeters long and weigh nearly 2 kilograms.

The article also briefly touches upon unrelated international news. German police are investigating a drone carrying explosives found on a runway at Leipzig/Halle Airport. Authorities are searching for another unidentified object potentially linked to the incident. Additionally, Italy's health ministry has issued warnings about extreme heat.