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Alligatorweed
(Alternanthera philoxeroides)
Found an invasive species? Register for a free login account, or submit a public report.
Mute swan
Cygnus olor Photo credit: © Mick Gosling/Flickr
Rock pigeon
Columba livia Photo credit: © Solveig Østerø Schrøder
European starling
Sturnus vulgaris Photo credit: © Sandy Stewart / Flickr
Birds
Common: Species found in at least 1/3 of Pennsylvania counties.
Uncommon: Species found in Pennsylvania, but not widespread (i.e., found in less than 1/3 of Pennsylvania counties.)
Not present: Species not yet found in Pennsylvania.
Note: Species list last updated in September 2021.
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