For the second year in a row, the World Wildlife Fund, WWF, is conducting the hedgehog count.
During the week, 3,200 observations of dead hedgehogs were reported. Over 80 percent of these were found along roads. It has been previously known that many hedgehogs are run over.
"By studying these reports, we can then better understand why the hedgehogs are decreasing", says Jessica Ångström, hedgehog expert in a press release.
But hedgehogs are not found everywhere. During the week, 5,100 reports came from people who have never seen a hedgehog in their residential area.
"Many have probably seen a hedgehog during childhood - but unfortunately, the species seems to have disappeared from some areas", says Jessica Ångström.
The hedgehog is included on the International Union for Conservation of Nature, IUCN's, red list. As the animal's natural habitat in Europe has disappeared, it seeks out gardens and green areas to build a nest.
The reports will be studied and later this year, a closer analysis will be presented.