Posted by: Sandy Steinman | March 4, 2012

Earthworms Culprit In Decreased Ovenbird Populations

Smithsonian Science reported that invasive European earthworms (Lumbricus spp.) are responsible for the decline in Ovenbird (Seiurus aurocapilla) populations in the northern Midwest U.S. forests.

The earthworms consume leaf litter on the forest floor. This results in a decrease in the herbaceous plants that grow in the leaf litter and provide cover for the ground nesting birds. This makes the potential nest sites too visible to predators so the Overbirds reject the areas as potential nesting habitat.  The decreased leaf litter also reduces the number of bugs available for the Ovenbirds to eat.

Read more at Earthworms to blame for decline of Ovenbirds in northern Midwest forests, study reveals | Smithsonian Science.


  1. […] Earthworms Cause Of Decreased Ovenbird Populations […]


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.


%d bloggers like this: