Specimen Information

Alligator mississippiensis
Alligator mississippiensis
(American alligator)
Reptiles-Crocodilians
Native Transplant

Specimen ID1548399
GroupReptiles-Crocodilians
GenusAlligator
Speciesmississippiensis
Common NameAmerican alligator
StateIL
CountyCook
LocalityHumboldt Park, Chicago, IL
Mapping AccuracyAccurate
HUC8 NameChicago
HUC8 Number07120003
HUC10 NameNorth Branch Chicago River-Chicago Sanitary and Ship Canal
HUC10 Number0712000301
HUC12 NameLower Branch Chicago River
HUC12 Number071200030106
Map
+
Collection Day12
Collection Month7
Collection Year2019
Year AccuracyActual
Potential Pathwayreleased pet
Statusfailed
Reference 1
Ref. Number:33407
Author:Held, A.
Date:2019
Title:An Alligator surfaces at a Chicago lagoon and a city snaps to attention
Publisher:NPR
Reference 2
Ref. Number:33425
Author:Serrano, A. and J. Anderson
Date:2019
Title:Alligator in Chicago’s Humboldt Park Lagoon caught overnight
Publisher:Chicago Tribune
CommentsNicknamed "Chance the Snapper." Captured 7/16/19.
Record TypeLiterature
Freshwater/MarineFreshwater
Number Collected1
Size5'3"


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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [11/16/2024].

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