Monday, September 1, 2025

I Spy on the Trails - August 16-31, 2025

Tall grasses dominate the prairies now
Holland Sand Prairie is no exception

I feel autumn coming. 

My "I Spy" lists of plants and wildlife are beginning to shrink rapidly. That, if nothing else, speaks of the coming fall. Our autumn equinox is just three weeks away and the signs of nature's pulling up her blanket to get ready for her winter rest are apparent everywhere. 

And who can blame her?  While she's had a wild and wonderous summer celebration of blooming flowers and lush growth, the nights are lengthening and the slowing results are everywhere as I hike. 

During the past two weeks we saw temps moderate (and air quality improve). We had one hard rain day (2.5” by us),  a sprinkle or two, a few foggy mornings and a last week of pleasant daytime temps combined with cool night temps. There was plenty of time to enjoy the last puppy days of August and observe the subtle changes going into fall.

Songbird migrations are beginning in earnest. Waterfowl migration is just beginning as well. These journeys will continue well into November on our Mississippi flyway. Recent strong north winds jumpstarted songbird migration in numbers large enough to be seen on Doppler radar. 

Remember to keep your outside lights off and curtains closed to help birds along in their nightly migrations. You can keep your eye on Cornell Lab's Birdcast to stay current on migration peaks. Also watch your bird feeders and the trees for surprise guests migrating through.

Pollen-covered 
common eastern bumblebee
on a stiff goldenrod
Nature action isn’t completely over by any stretch, though. Goldenrods, blazing stars, field thistles, false bonesets and the tall prairie grasses are coming on big time. Asters are just beginning to blossom and add their delicate colors to the landscape of yellows, pale greens and brown. 



Mushrooms and fungi continue their strong showings on the damp forest floors. Fruiting plants including roses, false Solomon's seal, Solomon's seal, Jack-in-the-pulpit and mayapple are displaying their berries and fruit along the trails. Beetles and other insects like grasshopper and cricket populations are burgeoning.

Red-legged grasshopper
on Jerusalem artichoke
But things are changing. The fields and forests have less variety in their birdsong and bright, pollinator-attracting blooms. Trees and bushes continue to show a greyish cast to their leaves as chlorophyll production continues to wane. Many of those summer pollinating plants are going to seed or showing their fuzzy seed heads. 

Bumblebees are slowing; huge bumblebee gynes (next year’s queens) are out and mating with drones. Soon the rest of the colony will die off and the gynes will enter diapause until spring, when they will  begin, by themselves, to start a new colony. 

Butterfly numbers are lessening as major pollinator plants have lost or are losing their blooms. Monarchs are beginning their migratory journey to Mexico. I am seeing these in greater numbers as they stop to nectar on pollinator flowers or rest along wooded edges in the evening. 

Graffiti lichen
Image -Tyler Barnhurst

I participated in one Nature School learning hike during the past two weeks - a Lichen Walk at Frontenac State Park led by Tanner Barnharst, author of  Minnesota Lichen Guide. Spending time in the micro world of lichens helped me really appreciate these organisms made up of fungi and either algae or cyanobacteria. It was a fun and worthwhile way to learn a lot from a lichen expert and the many Master Naturalists who attended as well. A great learning experience. I hope you take advantage of some of the interesting opportunities to hike and learn in September.


Beginning this month through the end of April, this column will switch from bi-monthly to monthly as nature slows down. But my hiking will continue at it’s usual mad pace!

See you on the trails!

Plant Observations
Flowering/mature plants:

  • agrimony, tall hairy
    Roundhead bushclover

  • alyssum, hoary
  • aster, aromatic
  • aster, calico
  • aster, Drummond's
  • aster, purple-stem
  • aster, white-panicle
  • beebalm, spotted
  • blazing star, dwarf
  • blazing star, rough
  • boneset, false
  • bushclover, roundhead
  • cardinal flower
  • cliffbrake, western dwarf
  • coneflower, cutleaf
  • coneflower, grey-headed
  • Culver’s root
  • fern, bulblet bladder-
  • fern, interrupted
  • fern, lady
  • fern, northern maidenhair
  • fern, ostrich
  • fern, sensitive
  • fern, spinulose wood
  • flax, grooved
  • fleabane, daisy
  • fleabane, prairie
  • forget-me-not
  • goldenrod, Canada
    Jersey tea
  • goldenrod, early
  • goldenrod, elmleaf
  • goldenrod, giant
  • goldenrod, grey
  • goldenrod, prairie (Missouri)
  • goldenrod, showy
  • goldenrod, stiff
  • goldenrod, tall
  • goldenrod, white flat-topped
  • goldenrod, zigzag
  • harebell
  • horsetail, rough
  • ironweed, prairie
  • jersey tea
  • Jerusalem artichoke
  • jewelweed, orange
  • jewelweed, yellow
  • Joe-Pye-weed, spotted
  • leafcup, small-flowered
  • lobelia, great blue
  • partridge pea
  • poppy mallow, purple
  • primrose, common evening
  • rattlesnake master
    Great blue lobelia
  • self-heal
  • snakeroot, white
  • spurge, flowering
  • sunflower, fewleaf
  • sunflower, giant
  • sunflower, hairy
  • sunflower, stiff
  • sunflower, swamp (sneezeweed)
  • sunflower, woodland
  • Susan, black-eyed
  • Susan, brown-eyed
  • thistle, field
  • tobacco, Indian
  • vervain, hoary
  • wild bergamot
  • yarrow

Sprouts/unbloomed/past bloom:

  • aster, calico
  • aster, smooth blue
  • aster, white heath
  • aster, western silver
  • bloodroot
  • leadplant
  • sagebrush, white
  • thimbleweed, tall
    Blue Cohosh fruit
  • wild ginger

Fruited:

  • blue cohosh
  • false Solomon's seal
  • Jack-in-the-pulpit
  • mayapple
  • spikenard, American

Grasses/Sedges:

  • grass, big bluestem
  • grass, bottle brush
  • grass, green foxtail
  • grass, little bluestem
  • grass, sideoats grama
  • grass, smooth brome
  • indiangrass, yellow
  • obscuregrass, Scribner's
  • switchgrass

Fungi/Moss/Lichen:

  • fungus, crowded parchment
    Rare dog-nose fungus -
    note the “nostrils” on the left
  • fungus, dog-nose
  • fungus, white jelly
  • ghost pipe
  • lichen, asterisk
  • lichen, candle flame
  • lichen, graffiti 
  • lichen, hooded sunburst
  • lichen, hoary rosette 
  • lichen, mortar dot 
  • lichen, orange fire dot
  • lichen, speckled shield
  • mushroom, American slippery Jack
  • mushroom, artist's conk
  • Mushroom, bolete - bitter
    Fluted white helvella saddle mushroom
  • mushroom,  bolete - chestnut
  • mushroom, bolete - ruby
  • mushroom, bolete - two-colored
  • mushroom, bolete -weeping
  • mushroom, chanterelle
  • mushroom, corrugated cap cort
  • mushroom, deer
  • mushroom, earthball
  • mushroom, saddle - fluted white helvella
  • mushroom, golden bittergill
  • mushroom, golden reishi
    Indigo milk cap mushroom - note the
    blue latex drops where it’s been touched
  • mushroom, - milk cap - Indigo
  • mushroom, hexagonal polypore
  • mushroom, laccaria - common
  • mushroom, laccaria - purple-gilled
  • mushroom, lactarius (milky cap)
  • mushroom, orange mycena
  • mushroom, oyster
  • mushroom, golden oyster
  • mushroom, lung oyster
  • mushroom, puffball
  • mushroom, puffball - skull-shaped
  • mushroom, purple-bloom russula
  • mushroom, turkey tail
  • mushroom, red waxy cap 

Wildlife Observations (seen, heard, detected)
Birds:

  • bluebird, eastern
  • blue jay
  • bluebird, eastern
  • catbird, grey
    Image -Evan Lipton Merlin Bird ID
  • cedar waxwing
  • chickadee, black-capped
  • crow, American
  • finch, house
  • goldfinch, American
  • grosbeak, rose-breasted
  • hawk, red-tailed
  • hummingbird, ruby-throated
  • killdeer
  • kingbird, eastern
  • nuthatch, white-breasted
  • redstart, American
  • robin, American
  • sparrow, chipping
  • sparrow, field
  • sparrow, house
    Great blue heron at
    MacGilvray's Seven Bridges

  • sparrow, song
  • swallow, barn
  • veery
  • vireo, Bell's
  • vireo, warbling
  • vireo, red-eyed
  • warbler, chestnut-sided
  • woodpecker, downy
  • woodpecker, hairy
  • woodpecker, pileated
  • woodpecker, red-bellied
  • wood-pewee, eastern
  • wren, house
  • yellowthroat, common

Waterfowl/fish:

  • geese, Canada
  • heron, great blue
  • pelican American
  • swan, trumpeter
  • trout, brown

Reptiles/amphibians
  • frog, northern leopard 
  • turtle, painted

Insects/arachnids:

  • bee, striped sweat
    Canoodling male and female walking sticks

  • beetle, goldenrod soldier
  • bumblebee, black-and-gold
  • bumblebee, brown-belted
  • bumblebee, common eastern
  • bumblebee, two-spotted
  • butterfly, clouded sulfur
  • butterfly, eastern comma
  • butterfly, pearl crescent
  • butterfly, eastern swallowtail
  • butterfly, Monarch
  • cricket, tree
  • damselfly, tule bluet
  • dragonfly, autumn meadowlark
  • dragonfly, 12-spotted skipper
  • dragonfly, widow skimmer
  • grasshopper, red-legged
  • grasshopper, differential
  • spider, yellow garden
  • walking stick


What are YOU seeing on your hikes?

Two weeks of hikes
Hikes below in colored, bold type or underlined have links to previous posts OR descriptions/location of the trails found online

Holland Sand Prairie, Holmen WI (3);  Frontenac State Park, Old Frontenac, MN (2); Bluffside Park, Winona MN; Weaver Sand Dunes, Kellogg MN (2), Riverside Park, La Crosse WI, McMillan Marsh Wildlife Area, Marathon Co, WI


Oncoming fall's greying landscape at
Beaver Creek Valley (MN) State Park

The "I Spy on the Trails" column is a phenology (the study of seasonal changes in plants and animals) journal to chronicle year-round the weather, plant life and wildlife I observe while hiking. It is very useful in helping me compare observations from year-to-year. The column is published monthly from September through April and then twice-a-month from May through August when warm weather brings the natural world back to vibrant life.

Crossing a ravine the easy way
Image -Nola Larson

Images, unless noted - Marge Loch-Wouters





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