Harriet Alexander Nature Center

Harriet Alexander Nature Center The Harriet Alexander Nature Center (HANC) is an oasis nestled within the borders of Roseville’s C

Community Nature Center featuring interpretive center & boardwalk.

Fun Fact Friday!🦆🪶If you’ve been around the marsh recently, you may be wondering, “What are all these female mallards do...
09/04/2026

Fun Fact Friday!🦆🪶

If you’ve been around the marsh recently, you may be wondering, “What are all these female mallards doing here?” And what’s with all the feathers?

Some of those brown ducks may actually be this year’s young males! Mallard ducklings hatch covered in down, and as they grow, both males and females develop mostly mottled-brown juvenile plumage. This camouflage helps young ducks blend into their surroundings while they’re still growing.

By late summer and early fall, young mallards begin molting, replacing their juvenile feathers with new adult plumage. This is when the males, or drakes, start becoming easier to pick out as their green heads, chestnut-colored chests, gray bodies, and curled black tail feathers begin to appear. Females, or hens, keep their mottled-brown coloring into adulthood.
But there’s another reason you might be seeing so many brown mallards! After breeding season, adult males molt into eclipse plumage, temporarily replacing their bright breeding colors with duller brown feathers that make them look much more like females. The marsh is booming with mallards right now, come check them out!

⭐A BIG thank you to Eagle Scout Huey! ⭐As part of his Eagle Scout project, Huey built a wonderful mud kitchen and chalkb...
09/03/2026

⭐A BIG thank you to Eagle Scout Huey! ⭐

As part of his Eagle Scout project, Huey built a wonderful mud kitchen and chalkboard easels for nature center programs.

Thank you Huey for your hard work, leadership, and generosity! These new additions are already inspiring creativity, imaginative play, and lots of outdoor fun.

Fun Fact Friday! 🌻Have you noticed what seems like thousands of brown-eyed Susans blooming around the nature center righ...
08/28/2026

Fun Fact Friday! 🌻
Have you noticed what seems like thousands of brown-eyed Susans blooming around the nature center right now?
These flowers are biennials or short-lived perennials, meaning individual plants may only live for a few years. Their secret to returning in such large numbers is self-seeding! The brown center of each flower head is actually made up of many tiny flowers called disk florets. After pollination, each floret has the potential to develop a seed.
As the flower heads dry, hundreds of seeds fall into the surrounding soil. Some become part of the seed bank, a collection of dormant seeds waiting in the soil for the right conditions to germinate. Over time, generation after generation can turn just a few plants into the sea of yellow flowers we see today!

Fun Fact Friday! 🐢As these warm and sunny summer days continue, you may still spot some of our painted turtles soaking u...
08/14/2026

Fun Fact Friday! 🐢
As these warm and sunny summer days continue, you may still spot some of our painted turtles soaking up the sun along the boardwalk. But if you look closely, you might notice something interesting happening to their shells!
A turtle’s shell is actually part of its skeleton and is connected to its ribs and backbone, meaning a turtle could never crawl out of its shell. It’s a living part of its body! The top of the shell is called the carapace, while the bottom is called the plastron.

But did you know that turtles shed too? Just like snakes shed their skin, many aquatic turtles shed the outer layers of the scales covering their shells. These scales are called scutes (pronounced “scoots”), and they are made of keratin, the same material found in our hair and fingernails.
As a turtle grows, new layers develop underneath the older scutes. Eventually, those older layers loosen and peel away, sometimes coming off in thin, almost see-through pieces.
As the turtle gets bigger, its shell grows right along with it, just one of the many cool adaptations turtles have!

📸 Photo credit: Harris Mallory

🐾This week's Paws and Claws camp is all about wild mammals, and today campers got a special visit from some of their dom...
08/12/2026

🐾This week's Paws and Claws camp is all about wild mammals, and today campers got a special visit from some of their domestic cousins!
Thanks to MN Pocket Pet Rescue for bringing animal ambassadors and teaching us all about them!

Join us tomorrow, Wednesday, August 12 at 9:00 AM, for Nature @ Nine our August topic, Rivers Are Alive! You may have he...
08/11/2026

Join us tomorrow, Wednesday, August 12 at 9:00 AM, for Nature @ Nine our August topic, Rivers Are Alive!
You may have heard of the Mississippi National River & Recreation Area, but have you heard about one of the original Wild and Scenic Rivers, the St. Croix National Scenic Riverway? Come learn about the history of the St. Croix, discover some of the incredible creatures that call the Riverway home, and find out how you can help protect this special place. Presented by Katrina Schlicker with Wild Rivers Conservancy.

We hope to see you there! 🌿🛶

Fun Fact Friday!🦋 The monarch butterflies you see fluttering around Minnesota right now are part of a very special gener...
08/07/2026

Fun Fact Friday!🦋

The monarch butterflies you see fluttering around Minnesota right now are part of a very special generation. Unlike the monarchs born earlier this summer, these butterflies can live up to 8 months and, later this month, they'll begin an incredible 3,000 mile journey to the mountains of central Mexico for the winter. What's even more amazing is that they've never made the trip before. Somehow, they find the same forests that generations before them have used. Scientists believe they use the sun and Earth's magnetic field as a natural compass to guide them along the way.

If you'd like to see some of these incredible creatures for yourself, stop by the nature center and take a short walk to our butterfly garden just beyond the entrance to the boardwalk.

📸 Photo credit: Harris Mallory

07/31/2026

Fun Fact Friday! 🪶🌧️

Did you know today's rain may have created the perfect hunting opportunity for broad-winged hawks?

Broad-winged hawks are opportunistic hunters, taking advantage of whatever the forest offers. After a rain shower, frogs, salamanders, snakes, insects, and other small animals become more active, making them easier to spot from high above.

These forest hawks build large stick nests high in mature trees, where they raise one to three chicks throughout the summer. While they may look relaxed perched in the canopy, they're constantly scanning the forest for movement as they search for food to bring back to their young.

We've been lucky enough to have a resident broad-winged hawk soaring around the Nature Center this summer. The next time you visit, keep your eyes on the treetops and your ears open for its distinctive "pee-eeeee!" call—you'll probably hear it before you spot it!

07/13/2026

We've had lots of visitors enjoying the trails lately... including these three!
These sandhill cranes stopped by Harriet Alexander Nature Center today for a leisurely stroll. We always love when these special guests make an appearance!

Fun Fact Friday!🌾It's been a little while! Summer has been keeping us busy... and the marsh certainly hasn't slowed down...
07/10/2026

Fun Fact Friday!🌾
It's been a little while! Summer has been keeping us busy... and the marsh certainly hasn't slowed down either.
If you've visited HANC lately, you've probably noticed the tall spikes of bright purple flowers blooming throughout the wetland. As beautiful as they are, they're purple loosestrife. An invasive plant that crowds out many of our native wetland species.

Luckily, we've had some tiny helpers hard at work, too! HANC was one of the first sites to release purple loosestrife beetles as a biological control, and they've been busy feeding on purple loosestrife for years, helping give our native wetland species a better chance to thrive.

The next time you're on the boardwalk, gently roll a purple loosestrife stem between your thumb and forefinger. You might be surprised to find that the stem is square! While square stems are often associated with plants in the mint family, purple loosestrife isn't actually a mint—it just happens to share this interesting feature.

Address

2520 Dale Street N
Roseville, MN
55113

Opening Hours

Tuesday 10am - 4pm
Wednesday 10am - 4pm
Thursday 10am - 4pm
Friday 10am - 4pm
Saturday 10am - 4pm
Sunday 1pm - 4pm

Telephone

+16517654262

Alerts

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