News and Blogs

2021 Falcon Banding Report!

John Howe and friend on Xcel Energy's Monticello stack in Monticello, MN.

This year, we banded 80 falcons at 29 sites in four states: a record for us! 11 sites were on cliffs, nine were at power plants, four were at grain mills, four were on buildings in the cities of Duluth, MN; La Crosse, WI; Dubuque, IA; and Peoria, IL and one was on a water tower at 3M! Want to learn more about our falcon banding work? Follow the link to our 2021 Banding Report: https://raptorresource.org/raptorresource/pdf/2021BandingReport.pdf

Monday at the movies: Decorah North and the Mississippi River Flyway!

November 15, 2021: North Nestorations!

We have your Monday raptor movie matinee! At Decorah North, DNF and Mr. North work the wind, chase off visitors, and copulate! We also get a nice look at some North nest neighbors, including an intrepid foraging skunk and two bucks locking horns over a doe. On the Flyway, two adult eagles lock talons and whirl, separating just before they hit the water. I liked all of these videos, but I especially enjoyed DNF tacking into her nest with a

Eagle airmail: postcards from D27 and D36!

Eagle cluster map: D1, D14, Four, D24, D25, D35, and D36

Where are D27 and D36? D27 flew back to the Decorah area following a very short visit to Canada in July and August. After spending a month or so near Decorah, she moved about 16 miles south to Postville: not far from Eagle Road north of Clermont! The area is incised with small tributaries of the Turkey River and filled with feedlot operations. She appears to have plenty of food and we’re sure she has plenty of company…which appears to

November 9, 2021: NestFlix and News!

November 9, 2021: The trees of Eagle Island looked like Christmas trees...if bald eagles were Christmas ornaments!

We have your night-time NestFlix! At Decorah North, DNF and Mr. North are busy with nestorations. Nest-building is a big part of pair bonding, but Mr. North wasn’t quite ready to give up his fish to DNF this morning – or welcome visitors to the North nest. On the Flyway, two American white pelicans photobomb five adult bald eagles! Look for bufflehead ducks in the background. Thank you so much for watching, sharing, learning, and especially for caring! I hope

Getting ready: Fall nestorations!

Annual Daylight Length, Decorah IA

Why are eagle couples in Decorah working on their nests right now? Among non-tropical birds, many activities (reproduction, molt, migration) are linked to daylight length. We’ve primarily discussed the photosensitive period of bird life here, when daylight lengthens, gonads start swelling, and human watchers start counting the days until eggs are laid. However, birds also have a photorefractory period that in many northern birds begins slightly prior to summer solstice in mid-June. Gonads start shrinking, a new hormonal regime takes

« Older Entries Recent Entries »