An Eastern Gray Squirrel in Harford Co., Maryland (7/31/2016).

View Record Details Photo by James Campbell MBP List

An Eastern Gray Squirrel in Howard Co., Maryland (2/2/2020).

View Record Details Photo by Odacir Pinto MBP List

Eastern Gray Squirrel in Carroll Co., Maryland (10/7/2006). (c) Bill Hubick, all rights reserved. (Photo ID: 779851 - Psn: 12)

View Record Details Photo by Bill Hubick MBP List

An Eastern Gray Squirrel in Howard Co., Maryland (12/7/2019).

View Record Details Photo by Dean Mahlstedt MBP List

An Eastern Gray Squirrel in Harford Co., Maryland (1/23/2018).

View Record Details Photo by Austin Jennings MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 301436 - Psn: 44)

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

An Eastern Gray Squirrel documented by students at Jemicy School in Baltimore Co., Maryland (9/26/2013).

View Record Details Photo by Emily Stanley MBP List

Eastern Gray Squirrels in Montgomery Co., Maryland (4/15/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 368914 - Psn: 45)

Eastern Gray Squirrels in Montgomery Co., Maryland (4/15/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (7/25/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 413922 - Psn: 45)

Eastern Gray Squirrel in Montgomery Co., Maryland (7/25/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

Eastern Gray Squirrel in Frederick Co., Maryland (12/9/2021). No rights reserved.

View Record Details Photo by Andy Wilson via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

An Eastern Gray Squirrel in Kent Co., Maryland (9/7/2013).

View Record Details Photo by Nancy Martin MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (12/5/2016).

View Record Details Photo by John R. Whitaker MBP List

Eastern Gray Squirrel in Talbot Co., Maryland (12/11/2010).

View Record Details Photo by Jared Satchell MBP List

An Eastern Gray Squirrel in Howard Co., Maryland (4/30/2017).

View Record Details Photo by Dean Mahlstedt MBP List

A brown-black phase Eastern Gray Squirrel in Howard Co., Maryland (3/3/2011).

Photo by Bill Hubick MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (10/21/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 430583 - Psn: 78)

Eastern Gray Squirrel in Montgomery Co., Maryland (10/21/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

A black-phase Eastern Gray Squirrel in Baltimore Co., Maryland (12/4/2015).

View Record Details Photo by Keith Eric Costley MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (4/7/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 367677 - Psn: 88)

Eastern Gray Squirrel in Montgomery Co., Maryland (4/7/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

An Eastern Gray Squirrel in Howard Co., Maryland (6/6/2021).

View Record Details Photo by Jeff Culler MBP List

A white-form Eastern Gray Squirrel in Anne Arundel Co., Maryland (10/19/2014).

View Record Details Photo by Wendy Crowe MBP List

An albino Eastern Gray Squirrel in Prince George's Co., Maryland (10/7/2014).

View Record Details Photo by Barbara Thurlow MBP List

An albino Eastern Gray Squirrel in Queenstown, Maryland (10/16/2013).

View Record Details Photo by Danny Poet MBP List

Eastern Gray Squirrel in Howard Co., Maryland (12/22/2016).

View Record Details Photo by Anthony VanSchoor MBP List

An albino Eastern Gray Squirrel in Prince George's Co., Maryland (summer 2014).

View Record Details Photo by Andy Connelly MBP List

An Eastern Gray Squirrel with unusual coloration in St. Mary's Co., Maryland (3/3/2012).

View Record Details Photo by Tyler Bell MBP List

Eastern Gray Squirrel in Howard Co., Maryland (6/1/2010).

View Record Details Photo by Bill Harms MBP List

Eastern Gray Squirrel (brown phase) in Prince George's Co., Maryland (12/28/2015).

View Record Details Photo by Jane Chandler MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (3/24/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 359402 - Psn: 144)

Eastern Gray Squirrel in Montgomery Co., Maryland (3/24/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (6/21/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 297600 - Psn: 154)

Eastern Gray Squirrel in Montgomery Co., Maryland (6/21/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (6/21/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

A black phase Eastern Gray Squirrel in Montgomery Co., Maryland (3/18/2020). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 357660 - Psn: 155)

A black phase Eastern Gray Squirrel in Montgomery Co., Maryland (3/18/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

An Eastern Gray Squirrel in Howard Co., Maryland (12/23/2020).

View Record Details Photo by Dean Mahlstedt MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (12/13/2017). (c) belyykit, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1201265 - Psn: 200)

Eastern Gray Squirrel in Montgomery Co., Maryland (12/13/2017). (c) belyykit, some rights reserved (CC BY-NC).

View Record Details Photo by belyykit via iNaturalist MBP List

Eastern Gray Squirrel in Harford Co., Maryland (9/27/2024).

View Record Details Photo by Cindy Pfeffer-Koerber MBP List

Eastern Gray Squirrel in Frederick Co. (9/26/2025). (c) aar7hood, some rights reserved (CC BY-NC)

View Record Details Photo by aar7hood via iNaturalist MBP List

Eastern Gray Squirrel in Frederick Co. (9/26/2025). (c) aar7hood, some rights reserved (CC BY-NC)

View Record Details Photo by aar7hood via iNaturalist MBP List

Eastern Gray Squirrel in Prince George's Co., Maryland (9/25/2025). (c) wren-falcon, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>) (Photo ID: 1373902 - Psn: 200)

Eastern Gray Squirrel in Prince George's Co., Maryland (9/25/2025). (c) wren-falcon, some rights reserved (CC BY)

View Record Details Photo by wren-falcon via iNaturalist MBP List

Eastern Gray Squirrel in Calvert Co., Maryland (11/14/2025). (c) Tonyia Johnson Stump, some rights reserved (CC BY-NC)

View Record Details Photo by Tonyia Johnson Stump via iNaturalist MBP List

Eastern Gray Squirrel in Baltimore Co., Maryland (11/2/2014). (c) Frode Jacobsen, some rights reserved (CC BY-NC)

View Record Details Photo by Frode Jacobsen MBP List

Eastern Gray Squirrel in Frederick Co., Maryland (12/23/2025). No rights reserved

View Record Details Photo by Andy Wilson via iNaturalist MBP List

Eastern Gray Squirrel in Frederick Co., Maryland (12/22/2025). (c) Valerijs Raymond Krepp, some rights reserved (CC BY-NC)

View Record Details Photo by thebirdnerdval via iNaturalist MBP List

Eastern Gray Squirrel in Montgomery Co., Maryland (3/28/2026). (c) Jenny Glenn, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>) (Photo ID: 1477485 - Psn: 200)

Eastern Gray Squirrel in Montgomery Co., Maryland (3/28/2026). (c) Jenny Glenn, some rights reserved (CC BY-NC)

View Record Details Photo by Jenny Glenn via iNaturalist MBP List

Eastern Gray Squirrel in Cecil Co., Maryland (4/12/2026). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>) (Photo ID: 1489465 - Psn: 200)

Eastern Gray Squirrel in Cecil Co., Maryland (4/12/2026). (c) Frode Jacobsen, some rights reserved (CC BY-NC)

View Record Details Photo by Frode Jacobsen MBP List

Eastern Gray Squirrel in Cecil Co., Maryland (4/12/2026). (c) Frode Jacobsen, some rights reserved (CC BY-NC)

View Record Details Photo by Frode Jacobsen MBP List

Eastern Gray Squirrel in Wicomico Co., Maryland (2/12/2023). (c) Cindi Fitzgerald, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 742377 - Psn: 224)

Eastern Gray Squirrel in Wicomico Co., Maryland (2/12/2023). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC).

View Record Details Photo by cin579 via iNaturalist MBP List

Eastern Gray Squirrel in Wicomico Co., Maryland (2/12/2023). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC).

View Record Details Photo by cin579 via iNaturalist MBP List

Eastern Gray Squirrel in Wicomico Co., Maryland (2/12/2023). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC).

View Record Details Photo by cin579 via iNaturalist MBP List

Map Snapshot

3,354 Records

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Eastern Gray Squirrel calling in Anne Arundel Co., Maryland (11/25/2022). (c) iibm360, some rights reserved (CC BY-NC). - iibm360 via iNaturalist.

Eastern Gray Squirrel in Anne Arundel Co., Maryland (1/7/2023). (c) iibm360, some rights reserved (CC BY-NC). - iibm360 via iNaturalist.

Relationships

In North America, the Eastern Gray Squirrel is the only known host of Neohaematopinus sciuri, a sucking louse (Dave Webb, pers. comm.).

Seasonality Summary

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Resources

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Citations

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Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

An Eastern Gray Squirrel in Harford Co., Maryland (7/31/2016). View Record Details Media by James Campbell.

An Eastern Gray Squirrel in Howard Co., Maryland (2/2/2020). View Record Details Media by Odacir Pinto.

An Eastern Gray Squirrel in Howard Co., Maryland (12/7/2019). View Record Details Media by Dean Mahlstedt.

An Eastern Gray Squirrel in Harford Co., Maryland (1/23/2018). View Record Details Media by Austin Jennings.

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

An Eastern Gray Squirrel documented by students at Jemicy School in Baltimore Co., Maryland (9/26/2013). View Record Details Media by Emily Stanley.

Eastern Gray Squirrels in Montgomery Co., Maryland (4/15/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

Eastern Gray Squirrel in Montgomery Co., Maryland (7/25/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

Eastern Gray Squirrel in Frederick Co., Maryland (12/9/2021). No rights reserved. View Record Details Media by Andy Wilson via iNaturalist.

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

An Eastern Gray Squirrel in Kent Co., Maryland (9/7/2013). View Record Details Media by Nancy Martin.

Eastern Gray Squirrel in Montgomery Co., Maryland (12/5/2016). View Record Details Media by John R. Whitaker.

Eastern Gray Squirrel in Talbot Co., Maryland (12/11/2010). View Record Details Media by Jared Satchell.

An Eastern Gray Squirrel in Howard Co., Maryland (4/30/2017). View Record Details Media by Dean Mahlstedt.

A brown-black phase Eastern Gray Squirrel in Howard Co., Maryland (3/3/2011). Media by Bill Hubick.

Eastern Gray Squirrel in Montgomery Co., Maryland (10/21/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

A black-phase Eastern Gray Squirrel in Baltimore Co., Maryland (12/4/2015). View Record Details Media by Keith Eric Costley.

Eastern Gray Squirrel in Montgomery Co., Maryland (4/7/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

An Eastern Gray Squirrel in Howard Co., Maryland (6/6/2021). View Record Details Media by Jeff Culler.

A white-form Eastern Gray Squirrel in Anne Arundel Co., Maryland (10/19/2014). View Record Details Media by Wendy Crowe.

An albino Eastern Gray Squirrel in Prince George's Co., Maryland (10/7/2014). View Record Details Media by Barbara Thurlow.

An albino Eastern Gray Squirrel in Queenstown, Maryland (10/16/2013). View Record Details Media by Danny Poet.

Eastern Gray Squirrel in Howard Co., Maryland (12/22/2016). View Record Details Media by Anthony VanSchoor.

An albino Eastern Gray Squirrel in Prince George's Co., Maryland (summer 2014). View Record Details Media by Andy Connelly.

An Eastern Gray Squirrel with unusual coloration in St. Mary's Co., Maryland (3/3/2012). View Record Details Media by Tyler Bell.

Eastern Gray Squirrel in Howard Co., Maryland (6/1/2010). View Record Details Media by Bill Harms.

Eastern Gray Squirrel (brown phase) in Prince George's Co., Maryland (12/28/2015). View Record Details Media by Jane Chandler.

Eastern Gray Squirrel in Montgomery Co., Maryland (3/24/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

Eastern Gray Squirrel in Montgomery Co., Maryland (6/21/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

A black phase Eastern Gray Squirrel in Montgomery Co., Maryland (3/18/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

Eastern Gray Squirrel in Montgomery Co., Maryland (11/4/2020). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

An Eastern Gray Squirrel in Howard Co., Maryland (12/23/2020). View Record Details Media by Dean Mahlstedt.

Eastern Gray Squirrel in Montgomery Co., Maryland (12/13/2017). (c) belyykit, some rights reserved (CC BY-NC). View Record Details Media by belyykit via iNaturalist.

Eastern Gray Squirrel in Harford Co., Maryland (9/27/2024). View Record Details Media by Cindy Pfeffer-Koerber.

Eastern Gray Squirrel in Frederick Co. (9/26/2025). (c) aar7hood, some rights reserved (CC BY-NC) View Record Details Media by aar7hood via iNaturalist.

Eastern Gray Squirrel in Prince George's Co., Maryland (9/25/2025). (c) wren-falcon, some rights reserved (CC BY) View Record Details Media by wren-falcon via iNaturalist.

Eastern Gray Squirrel in Calvert Co., Maryland (11/14/2025). (c) Tonyia Johnson Stump, some rights reserved (CC BY-NC) View Record Details Media by Tonyia Johnson Stump via iNaturalist.

Eastern Gray Squirrel in Baltimore Co., Maryland (11/2/2014). (c) Frode Jacobsen, some rights reserved (CC BY-NC) View Record Details Media by Frode Jacobsen.

Eastern Gray Squirrel in Frederick Co., Maryland (12/23/2025). No rights reserved View Record Details Media by Andy Wilson via iNaturalist.

Eastern Gray Squirrel in Frederick Co., Maryland (12/22/2025). (c) Valerijs Raymond Krepp, some rights reserved (CC BY-NC) View Record Details Media by thebirdnerdval via iNaturalist.

Eastern Gray Squirrel in Montgomery Co., Maryland (3/28/2026). (c) Jenny Glenn, some rights reserved (CC BY-NC) View Record Details Media by Jenny Glenn via iNaturalist.

Eastern Gray Squirrel in Cecil Co., Maryland (4/12/2026). (c) Frode Jacobsen, some rights reserved (CC BY-NC) View Record Details Media by Frode Jacobsen.

Eastern Gray Squirrel in Wicomico Co., Maryland (2/12/2023). (c) Cindi Fitzgerald, some rights reserved (CC BY-NC). View Record Details Media by cin579 via iNaturalist.