Courtesy Twin Cities NaturalistWild temperature swings, migrating birds, flowers blooming, trees leafing out. These are some of the signs of spring this week. Check out this week's Monday Phenology: Nature's Week in Review where professional naturalist Kirk Mona of Twin Cities Naturalist discusses what new nature observations were seen around the Twin Cities area in the past week.
Phenology is the science of the seasons. It looks at how and when nature changes according to seasonal climatic conditions.