Minnesota Power Falcons


About the MPL Cohasset falcons

About the falcons

The Minnesota Power Cohasset peregrine falcons are nesting on the catwalk of an unused power stack at the Clay Boswell facility in Cohasset, MN. The falcons can also be watched here: https://www.mnpower.com/Environment/FalconCam. This nest was first productive in 1993 and has produced 77 falcons to date (2018). It has a history of unbanded falcons. Who are they and where are they coming from? While we don’t know a whole lot about who they are, we know that we had a new 2-y/o falcon in 2017 since she still had some immature feathers. Unusually, she tends to stay in the nest box to defend her young instead of flying at banders. This was the first and is (to our knowledge) still the only nest in Itasca county. Having said that, these unbanded falcons have to be coming from somewhere. While falcons can range far afield when they disperse or lose a nest, there may be a mine, industrial, or even tree nest somewhere that we don’t know about.

Clay Boswell is located on Blackwater Lake next to the Mississippi River and is rich in food resources. In general, the falcons begin courtship between early and Mid-March and lay eggs between late March and mid-April. Hatch should begin in early to mid-May, fledge generally occurs 38-40 days after that, and young disperse in late August or mid-September. If one or both of the adults migrate, they leave in the late fall. Adult falcon pairs are not believed to migrate together.

Peregrine falcons do not make stick nests. Instead, they make scrape nests on ledges and debris, and feed primarily on birds that they catch in the air. To learn more about peregrine falcons in general, please follow this link to the Cornell Lab of Ornithology website: http://www.allaboutbirds.org/guide/Peregrine_Falcon/id.

Eyasses and Outcomes

Eyasses and Outcomes

Detailed Nest Records

 Year Mom  Dad # of young produced
2021 D/51 – Lucia Adult unknown 4
2020 Adult unknown Adult unknown 2
2019 D/51 – Lucia Unbanded 2
2018 Unbanded Unbanded 3
2017 Unbanded – new Unbanded 2
2016 Unbanded Unbanded 4
2015 No data No data 4
2014 No data No data 0
2013 Unbanded No data 4
2012 No data No data 4
2011 Unbanded Unbanded 4
2010 Unbanded Unbanded 3
2009 Unbanded Unbanded 3
2008 Unbanded No data 0
2007 Unbanded Unknown (b/g) 2
2006 Unbanded Unknown (b/g) 4
2005 Unbanded Unbanded 3
2004 Unbanded Unbanded 4
2003 Unbanded Unbanded 2
2002 Unbanded Unbanded 3
2001 Unbanded Unbanded 4
2000 Unbanded Unbanded 4
1999 Unbanded Unbanded 3
1998 Unknown Unknown 4
1997 X/H (red) 74/X (bl) 4
1996 X/H (red) 74/X (bl) 1
1995 X/H (red) 74/X (bl) 3
1994 X/H (red) 74/X (bl) 3
1993 X/H (red) 74/X (bl) 2

About the MPL Hibbard falcons

About the falcons

The Minnesota Power Hibbard peregrine falcons are nesting on the catwalk of power stack located on Duluth Harbor near the Bong Bridge. The falcons can also be watched here: https://www.mnpower.com/Environment/FalconCam. This nest was first productive in 2008 and has produced 26 falcons to date (2018). The adult female, *R/*U Isabel, is a 2009 hatch from the Colonnade Building in Minneapolis roughly 134 miles south as the falcon flies. We have no data on the adult male.

In general, the falcons begin courtship between early and Mid-March and lay eggs between late March and mid-April. Hatch should begin in early to mid-May, fledge generally occurs 38-40 days after that, and young disperse in late August or mid-September. If one or both of the adults migrate, they leave in the late fall. Adult falcon pairs are not believed to migrate together.

Peregrine falcons do not make stick nests. Instead, they make scrape nests on ledges and debris, and feed primarily on birds that they catch in the air. To learn more about peregrine falcons in general, please follow this link to the Cornell Lab of Ornithology website: http://www.allaboutbirds.org/guide/Peregrine_Falcon/id.

Eyasses and Outcomes

Eyasses and Outcomes

Detailed Nest Records

 Year Mom  Dad # of young produced
2021 Unknown Unknown 2
2020 Unknown Unknown 4
2019 70/H (Sanguine) No data 3
2018 *R/*U (Isabel) No data 3
2017 *R/*U (Isabel) No data 3
2016 *R/*U (Isabel) No data 4
2015 *R/*U (Isabel) No data 1
2014 *R/*U (Isabel) N/82 (Arsene) 3
2013 *R/*U (Isabel) N/82 (Arsene) 2
2012 Unbanded Unbanded 3
2011 Unbanded Unbanded 3
2010 Unknown (new) Unbanded 0
2009 *Y/6 Unbanded 3
2008 *Y/6 Unbanded 1
2007 ? ? 0