Invasive SpeciesAsian bittersweet

Celastrus orbiculatus
FOUND by Penguino
Falmouth, ME
ID Confirmed
Quality checked by Jamien Jacobs
Peer reviewed by JsFaves
Field Notes
After we noticed the Bittersweet we started to pull it down and we found a couple nests.
Supporting Evidence
Photo of my evidence.
The bittersweet has yellow and red berries ( these have matured over the years.)
Photo of my evidence.
The bittersweet wraps around trees and has wooden vines.
Photo of my evidence.
The Bittersweet has dark green leaves and are round with a pointed tip.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Celastrus orbiculatus
Common name:
Asian bittersweet
Count of individuals: 
3/4 - Completely covered
Flower (plants)
Fruit (plants)
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
We’re sorry, JavaScript is required to view the map. If JavaScript is you may wish to upgrade to a newer browser in order to view this map.
Map this species
N 43.687050 °
W -70.233930 °
Observation Site Information
A photo of our study site.
Upland - Forest
Trip Information
Mackworth Island Study Plot 1
Trip date: 
Sat, 2011-10-01 10:17
Town or city: 
Falmouth, ME
Type of investigation: 
Species and Habitat Survey
Habitat Observations
Species diversity: 
6 different species
Evidence of vectors: 
Dirt road
Walking trail
Tree canopy cover: 
Between 1/2 and 3/4
Soil moisture: 


Your pictures are amazing the quality is amazing everything here is amazing. I think you really caught the colors of the Asian Bittersweet. Although I think you should have described what was in the pictures a little better. Over all your findings are good. Nice Job!

We think it might have been a squirrel nest, it had strips of cloth in it.

We didn't know what kind of nest it was but, it could have very well been a squirrels nest but nobody knows. My teammate didn't know that squirrels even made nests.

I know that bittersweet is an invasive, but there is something about that red and yellow on a beautiful fall day. You really captured the colors in your evidence photos.

It's also interesting that you found nests. Could you tell anything about the birds who lived in them? Were the nests old or recently inhabitated? Do you think the birds ate those beautiful, red berries?

Thank you for telling us about how you like our page, we will allways have that in mind

I was thinking that if you had photos of the nest, you might be able to do some research to figure out what animal was nesting in the bittersweet. That could be cool. I wonder if there are biologists who study where different birds or other animals nest.

If you decided to research it, you could post your findings as a project to the project bank. :)

Keep up the awesome work, Penguino!

We didn't have any photos of the nest, but we might be able to go and see if it's still in the bittersweet and we can see if we can take a picture of it then post it.

We don't know what bird was living in the nest, but we do know that it was from a long time ago because there wasn't a bird living in the nest.