On November 19, Saturday, from 9 a.m. to 1 p.m., habitat maintenance work will take place at the Denevér road greenfield organized by the Nature Protection Civil Guard, under the professional guidance of the Hungarian Ornithological Association and FŐKERT, which manages the nature conservation of the area. The organizers are looking for the help of volunteers to suppress alien and invasive plants, as well as to pick up garbage.