Phenology

Phenology is the study of recurring plant and animal life cycle events in relation to climate and season. By observing these natural rhythms, we can engage visitors in hands-on learning experiences that deepen their connection to the natural world.

2025 Nature notes


April 12: Song Sparrow and Eastern Phoebe singing on campus, bear scat seen with some bear actvitiy (most likely males), Statehouse lake mostly covered, shorline beginning to open up

April 11: Upper 50's, most of the snow is gone, some snowbanks, trails remain ice and snow covered (mostly)

April 10: Winter Wrens are back and singing

April 9: Snowshoe hares are brown again, Loon spotted on the WI River in St. Germain, cranes are flying over and calling

April 8:  Robins are being spotted in the Northwoods, snow is disappearing and maple sap is still flowing heavily from the sugar maples.

March 30:  Received an ice storm, followed by 5-6 inches of snow, leaving our grounds adorned in a March wintry scene.

March 27: Northern cardinal heard on NLDC campus!

March 25: Brown Creepers are back and singing!

March 21:  First day of spring! Chipmunks have been seen out of hibernation.

March 15: American robins seen in the Mercer area.

March 13: Bald Eagles seen in Boulder Junction demonstrating cartwheel courtship display.

March 9: A few 50+ degree days caused most of the snow to melt. Statehouse Lake is starting to become slushy in areas, maple trees tapped

March 4:   Manitowish Waters received 1 inch of rain, followed by 8 inches of snow.

Feb 27: Skunk seen in Winchester walking along the road.

Feb 26: Consistent days of 38-43 degree weather and sunshine could mean maple syrup season is approaching.

Feb 24: Barred owls heard calling in unison, mating season is here!

Feb 21: Wolves and coyotes are coming into estrus. During wolf track surveys, NLDC staff found raised-leg urination spots that had hints of blood in them, meaning wolves will be mating soon.

Jan 8:  White-winged crossbills have been seen in flocks around the Northwoods, seems like a good irruption year for the species.

Jan 1:  Poor snow conditions, but still better than last year's winter. Ground is covered in a 3-4 inches of ice and 1-2 inches of snow on top. Statehouse lake has 8-10 inches of ice.