From RRP's FB page:
Decorah Eagles
May 12, 2022: New male, good eye close-ups -
https://youtu.be/sjqGsJ0LJUA. Knock on wood, the new eagles are here to stay! We'll settle on nomenclature, but in the meantime, we're starting to build a database of features to help us identify the new pair.
May 9, 2022: Stick work continuing, nestorations, grass delivery -
https://youtu.be/62W1ArzontU. It's unlikely that the new pair will lay eggs this year, but they sure are hard at work on N1 right now! Nest building is an important part of eagle courtship: it takes teamwork, dedication, and a little sticky OCD to build a giant nest that will withstand the elements and shelter eggs and young through an Iowa winter.
All four nests that we've built or repaired - N2B in 2015, DNN in 2018, Fort St. Vrain in 2020, and N1 in 2021 - have been adopted by eagles. What started as an experiment - will Mom and Dad move to a new nest? - has proven to be a valuable management technique. As eagles lose nests or come into conflict with human beings, it's helpful to know that we can assist or shift them by creating starter nests. Their behavioral plasticity is fascinating and completely in line with Louis Lefebvre's documentation of eagle intelligence. More on that soon!
May 8, 2022: Female brought a huge stick -
https://youtu.be/PmIGKXZ7DNY. That is a big stick! I couldn't build a nest like this with my mouth...but it's a lot easier for her to bring in sticks than it was for us! Here's a short video of the N1 nest rebuild:
https://youtu.be/b7KGQ_cTT6U.

May 9, 2022: New male eagle near N1 in Decorah. Note the dark feathers on the back of his head and white patches interspersed with his body feathers. I'm wondering if his unusually colored feathers indicate a relatively young eagle. We'll see if they are replaced by white head feathers and brown body feathers. If not, this will make for a very easy ID!

May 9, 2022: That's a big stick! I couldn't build a nest with my mouth, but she has a much easier time getting sticks to the nest! Here's a look at our N1 rebuild:
https://youtu.be/b7KGQ_cTT6U.
Eagle mouths are also eagle hands, which explains why their beaks are so sensitive. What sort of information might they gain from handling a stick and how does it compare to what we would learn from our hands?

May 12, 2022: New male, good closeups. Knock on wood, the new eagles are here to stay! We'll settle on nomenclature, but in the meantime, we're starting to build a database of features to help us identify the new pair