Owl Monitoring


Monitoring Saw-whet and Long-eared owl migration in Downeast Maine since 2015


Owl Monitoring in Maine

The Petit Manan owl migration station is a collaborative effort of Project Owlnet with Maine Natural History Observatory.  David Brinker is the principal investigator.  This station is one of many along the Eastern seaboard that tracks owls during fall migration.  Project Owlnet has been facilitating communication, cooperation, and innovation among owl-migration researchers in North America and beyond since 1994. 


Northern Saw-whet Owls

It is almost exclusively Northern Saw-whet owls that are observed at the Petit Manan Point station with the occasional Long-eared Owl.  Saw-whets appear to be declining globally but more research is needed to understand the extent and causes of these population changes.    


The Data


The 2021 monitoring season is just getting started.  Check back often as we will be updating the chart below every day or two as the season progresses!  So far, 35% of the owls are adults - typical for an off-peak season. The station will be in operation until Halloween weekend. 


2020 exceeded our previous record for the most owls recorded!  This big owl year was a result of a population boom in small mammal prey availability during the 2020 breeding season that was the result of a huge crop of fir and spruce cones across eastern boreal forests during 2019.  When these large cone crops occur, the abundance of mice, primarily deer mice and red-back voles increases and fuels the production of large broods of young by breeding saw-whet owls.  These large flight years occur every four to five years.  



Red Pins: Owls banded elsewhere that were observed at the Petit Manan Point station.


Green Pins: Owls banded at the station that were observed elsewhere before 31 December.

Yellow Pins: Owls banded at the station that were observed elsewhere often more than a year later.



Due to COVID-19, we aren't able to accept the help of volunteers this year.  If you would like to support this project with a financial contribution, please contact glen@mainenaturalhistory.org.  Your donations go toward equipment maintenance and coffee for all those chilly owl technicians that have to stay out all night running the station.  Thank you!

In future years we hope to be able to accept the aid of volunteers who are willing to travel and stay up late.  We supply the owls - you supply the enthusiasm!


Learn More

Want to learn more about Maine owls?  Check out the webinar by Observatory Ecologist, Logan Parker, on owl monitoring in Maine.