Trempealeau Eagles

Welcome to the Trempealeau Eagles’ Nest! We hope you enjoy watching and learning with us! Click the livestream to watch and scroll down the page to learn more about the eagles and their surroundings.

SUPPORT OUR WORK
loader-image
Trempealeau, WI
8:13 am, Apr 19, 2025
weather icon
Wind Wind: 9 mph NNW
Precipitation Precipitation: 0 inch
Snow Snow: 0
Sunrise Sunrise: 6:15 am
Sunset Sunset: 7:54 pm

About the Trempealeau Eagles

About the Eagles

The Trempealeau Eagles are nesting on private property in the city of Trempealeau, Wisconsin. Their nest is located in a white pine tree overlooking the Mississippi River. In general, the eagles begin courtship in October, productive mating in late January or early February, and egg-laying in mid to late February. Hatching usually begins in late March to early April, and the eaglets fledge in mid-to-late June. While young usually disperse between August and October, the adults remain on territory year round.

The eagles eat live and dead fish, squirrels, other birds, rabbit, muskrat, deer, possum and anything else they can catch or find. To learn more about bald eagles in general, please follow this link to the Cornell Lab of Ornithology website.

Adults

The male is known as Mr. T.  The female is known as Mrs. T. While neighbors have been documenting them since 2017, we’ve only been watching them since 2024. We had a new male in 2024 and we may have a new male this year based on nest chronology and behavior.

Nests

This is the only nest at this site, although others can be seen nearby. The eagles have occupied this nest for at least five years. It is roughly 65 feet off the ground.

Quick facts
Common name: Bald Eagle
Scientific name: Haliaeetus leucocephalus
Length: 2.3–3.1 feet | 71–96 cm
Wingspan: 5.9 – 7.5 feet | 1.7-2.2 meters
Weight: 6.5 – 13.8 pounds | 3–6.3 kilograms
Lifespan: Up to 40 years in the wild

Bald Eagle Vocalization

Learn More About Bald Eagles

March 27, 2024: An Eagletude fit for royalty! DN17 and DN18 turned three and two days old today.

Eaglet Growth and Development: Week One

We’re writing a series of blogs about the first few weeks of an eaglet’s life. An eaglet spends roughly 75 to 80 days in the nest. For about the first half, it grows and gains weight. For about the second half, it grows flight feathers and starts developing the skills it will need post-fledge. We will focus on week one in this blog. What can we expect in the first week following hatch? Like humans, a growing eaglet has developmental

April 14, 2024: The last gosling hatches at N1.

Canada Geese: Precocial versus Altricial

As watchers know, Canada geese are nesting in two abandoned bald eagle nests in Decorah, Iowa. Hatch watch at N1 and our Bald Eagle nest in Trempealeau, Wisconsin starts tomorrow. This blog discusses the different between precocial Canada Geese and altricial Bald Eagles. Altricial eaglets rely on parental care until they fledge. But goslings are precocial: capable of moving around, self-feeding, and leaving the nest shortly after hatch. What does that mean? Read on to learn more! Canada Geese and

An embryonic chicken at roughly the same stage as a 24-day old eaglet. Image credit Carolina Biological Supply.

Peek inside a bald eagle egg: 24 days!

As of this blog post, DNF’s two eggs are 28 and 25 days old, Mrs. T’s three eggs are eight, five, and two days old, and Ma FSV’s four eggs are 18, 14, 11, and 7 days old. Hatch watch for Decorah North begins on March 19. What do embryonic eagles look they look like as they develop and grow inside their eggs? Dr. Peter Sharpe from the Institute for Wildlife Studies developed a table of bald eagle embryonic development

This chicken embryo is roughly equivalent to an eaglet at about 13 days. We can see the bony plate around its eyes, long folded limbs, rudimentary feet and 'hands', feather germs, and oversized head. Next up: feathers and scales!

Peek inside a bald eagle egg: 17 days!

As of this blog post, DNF’s two eggs are 22 and 19 days old. We have a three-day-old egg in Trempealeau and four eggs ranging from 11 days old to two days old at Xcel Energy’s Fort St. Vrain nest. What do embyronic eagles look like as they develop and grow inside their eggs? Dr. Peter Sharpe from the Institute for Wildlife Studies developed a table of bald eagle embryonic development based on work done by Hamburger and Hamilton (1951). While

Seven day old chicken embryo. It's roughly equivalent to a 12-day old embryonic eagle.

Peek inside a bald eagle egg: 11 days!

What do embryonic eagles look they look like as they develop and grow inside their eggs? Dr. Peter Sharpe from the Institute for Wildlife Studies developed a table of bald eagle embryonic development based on work done by Hamburger and Hamilton (1951). While not all bald eagle eggs hatch in 35 days, the stages of development look something like this… When we last peeked inside the egg, our embryonic eagle had inner and outer layers, a developing circulatory system, a

Click for More About Bald Eagles
News

Click a title to read more

Welcome to the world, TE5!

Welcome to the World, TE5!

Mrs. T has her talons full! TE5 hatched at 6:35 AM this morning! The T’s now have three hatchlings: TE3, who is turning six days old, TE4, who is turning four days old, and baby TE5. As of this post, TE3 and TE4 have each eaten nine times, with five feedings by Mr. T and four by Mrs. T. TE5 is still being nourished by the yolk it consumed shortly before hatching, but look for a feeding later today. Videos

Mr. T in 2025. Thanks to GA Bear for the capture!

Does Mrs. T Have A New Mr. T?

A combination of nest timing and behaviors made us consider the likelihood that Mrs. T could have a new Mr. for the second year in a row. Read on to learn more! Nesting records: A new mate (usually) equals later eggs In general, eagles tend to lay eggs later during their first season with a new mate and move laying earlier in the years that follow. Here’s what our records show: Egg-laying is influenced by individual, social, and environmental stressors,

March 27, 2024: An Eagletude fit for royalty! DN17 and DN18 turned three and two days old today.

Eaglet Growth and Development: Week One

We’re writing a series of blogs about the first few weeks of an eaglet’s life. An eaglet spends roughly 75 to 80 days in the nest. For about the first half, it grows and gains weight. For about the second half, it grows flight feathers and starts developing the skills it will need post-fledge. We will focus on week one in this blog. What can we expect in the first week following hatch? Like humans, a growing eaglet has developmental

April 12, 2025: Eyeball - breakfast of cuteness champions!

Eyeball: Breakfast of Cuteness Champions!

Cuteness overload and hip hip hooray! TE3 got a nice feeding this morning and it looks like TE4 is on its way! Cuteness overload and hip hip hooray! TE3 got a nice feeding this morning and it looks like TE4 is on its way! Note the delectable little bites! New hatchlings are building strength and coordination, and they need an easy-to-swallow food that is 100% digestible: no bones, fur, or scales. Eyeball is an excellent hatchling food: eyeball are digestible,

Pip-pip hooray! Hatch in progress at our Trempealeau Wisconsin nest

Pip-pip-hooray: We have a hatch in progress at Trempealeau!

Pip-pip-hooray: We have a hatch in progress at Trempealeau! Go Mrs. T! https://youtu.be/_UxEDXKcBRw?si=gyEdGrRE-3L2o3IU Watch hatch live here – but remember, hatching is a process! https://www.raptorresource.org/trempealeau-eagles/ No related posts.

>> More News
Nest Records

Eaglets and Outcomes: Detailed Annual Information

Year Nest Parents Eaglets Known Outcomes
2024 T1 Mr. T, Mrs. T None Mrs. T laid two eggs. TE1 hatched on April 3 and TE2 hatched on April 7 and fledged in mid-June.

We often get questions about where the eaglets go after they disperse. We have never tracked eaglets from this nest, but we have tracked eaglets from the Decorah nest. For more information, visit our eagle maps.

Trempealeau Eagles Video Library

Trempealeau Eagles Video Library

Click the hamburger icon on the top right of the video below to view a full list of videos from our most recent playlist, or visit our youtube channel here: https://www.youtube.com/c/RaptorResourceProject.