A Northern Rough-winged Swallow near its nesting cavity on a bank of the Patapsco River, Howard Co., Maryland (5/20/2007).

Photo by Bill Hubick MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (4/30/2022). (c) Jaroslav Holly, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 559429 - Psn: 25)

Northern Rough-winged Swallow in Montgomery Co., Maryland (4/30/2022). (c) Jaroslav Holly, some rights reserved (CC BY-NC).

View Record Details Photo by hollyjaro via iNaturalist MBP List

A Northern Rough-winged Swallow in Harford Co., Maryland (8/14/2016).

View Record Details Photo by Matthew Addicks MBP List

Northern Rough-winged Swallow in Frederick Co., Maryland (4/7/2023). No rights reserved.

View Record Details Photo by Andy Wilson via iNaturalist MBP List

Northern Rough-winged Swallow in Prince George's Co., Maryland (3/27/2022). (c) Sergei Drovetski, all rights reserved. (Photo ID: 540836 - Psn: 44)

View Record Details Photo by Sergei Drovetski MBP List

Northern Rough-winged Swallow in Prince George's Co., Maryland (5/9/2021). (c) Sergei Drovetski, all rights reserved. (Photo ID: 375449 - Psn: 45)

View Record Details Photo by Sergei Drovetski MBP List

Northern Rough-winged Swallow in Prince George's Co., Maryland (3/27/2022). (c) Sergei Drovetski, all rights reserved. (Photo ID: 540838 - Psn: 45)

View Record Details Photo by Sergei Drovetski MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (6/19/2022). (c) Jaroslav Holly, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 590402 - Psn: 55)

Northern Rough-winged Swallow in Montgomery Co., Maryland (6/19/2022). (c) Jaroslav Holly, some rights reserved (CC BY-NC).

View Record Details Photo by hollyjaro via iNaturalist MBP List

A juvenile Northern Rough-winged Swallow in Baltimore Co., Maryland (7/2011). Among other subtle details, note the shape and color of the gape. This is often a give-away for aging birds as juveniles.

Photo by Jon Corcoran MBP List

A juvenile Northern Rough-winged Swallow in Howard Co., Maryland (6/13/2014).

View Record Details Photo by Russ Ruffing MBP List

Northern Rough-winged Swallow in Prince George's Co., Maryland (3/27/2022). (c) Sergei Drovetski, all rights reserved. (Photo ID: 540835 - Psn: 66)

View Record Details Photo by Sergei Drovetski MBP List

A juvenile Northern Rough-winged Swallow in Howard Co., Maryland (6/25/2014).

Photo by Richard Orr MBP List

A Northern Rough-winged Swallow in Harford Co., Maryland (4/17/2016).

View Record Details Photo by Matthew Addicks MBP List

A Northern Rough-winged Swallow in Howard Co., Maryland (4/23/2014).

View Record Details Photo by Bonnie Ott MBP List

A Northern Rough-winged Swallow in flight in Baltimore Co., Maryland (4/11/2015).

View Record Details Photo by Jon Corcoran MBP List

A Northern Rough-winged Swallow in Prince George's Co., Maryland (5/3/2019).

View Record Details Photo by Rick Borchelt MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/26/2023). (c) Stephen John Davies, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 767750 - Psn: 155)

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/26/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (7/4/2023). (c) Stephen John Davies, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 840728 - Psn: 155)

Northern Rough-winged Swallow in Montgomery Co., Maryland (7/4/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (9/3/2024). (c) Stephen John Davies, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1095518 - Psn: 162)

Northern Rough-winged Swallow in Montgomery Co., Maryland (9/3/2024). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Prince George's Co., Maryland (4/10/2022). (c) Sergei Drovetski, all rights reserved. (Photo ID: 549336 - Psn: 165)

View Record Details Photo by Sergei Drovetski MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/29/2023). (c) Stephen John Davies, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 770662 - Psn: 165)

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/29/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/29/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (7/4/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Montgomery Co., Maryland (4/19/2023). (c) Stephen John Davies, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 797972 - Psn: 172)

Northern Rough-winged Swallow in Montgomery Co., Maryland (4/19/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC).

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

Northern Rough-winged Swallow in Calvert Co., Maryland (6/4/2019). (c) rosalie-rick, all rights reserved. (Photo ID: 1220318 - Psn: 200)

View Record Details Photo by rosalie-rick via iNaturalist MBP List

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

A Northern Rough-winged Swallow near its nesting cavity on a bank of the Patapsco River, Howard Co., Maryland (5/20/2007). Media by Bill Hubick.

Northern Rough-winged Swallow in Montgomery Co., Maryland (4/30/2022). (c) Jaroslav Holly, some rights reserved (CC BY-NC). View Record Details Media by hollyjaro via iNaturalist.

A Northern Rough-winged Swallow in Harford Co., Maryland (8/14/2016). View Record Details Media by Matthew Addicks.

Northern Rough-winged Swallow in Frederick Co., Maryland (4/7/2023). No rights reserved. View Record Details Media by Andy Wilson via iNaturalist.

Northern Rough-winged Swallow in Montgomery Co., Maryland (6/19/2022). (c) Jaroslav Holly, some rights reserved (CC BY-NC). View Record Details Media by hollyjaro via iNaturalist.

A juvenile Northern Rough-winged Swallow in Baltimore Co., Maryland (7/2011). Among other subtle details, note the shape and color of the gape. This is often a give-away for aging birds as juveniles. Media by Jon Corcoran.

A juvenile Northern Rough-winged Swallow in Howard Co., Maryland (6/13/2014). View Record Details Media by Russ Ruffing.

A juvenile Northern Rough-winged Swallow in Howard Co., Maryland (6/25/2014). Media by Richard Orr.

A Northern Rough-winged Swallow in Harford Co., Maryland (4/17/2016). View Record Details Media by Matthew Addicks.

A Northern Rough-winged Swallow in Howard Co., Maryland (4/23/2014). View Record Details Media by Bonnie Ott.

A Northern Rough-winged Swallow in flight in Baltimore Co., Maryland (4/11/2015). View Record Details Media by Jon Corcoran.

A Northern Rough-winged Swallow in Prince George's Co., Maryland (5/3/2019). View Record Details Media by Rick Borchelt.

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/26/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC). View Record Details Media by Stephen John Davies via iNaturalist.

Northern Rough-winged Swallow in Montgomery Co., Maryland (7/4/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC). View Record Details Media by Stephen John Davies via iNaturalist.

Northern Rough-winged Swallow in Montgomery Co., Maryland (9/3/2024). (c) Stephen John Davies, some rights reserved (CC BY-NC). View Record Details Media by Stephen John Davies via iNaturalist.

Northern Rough-winged Swallow in Montgomery Co., Maryland (3/29/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC). View Record Details Media by Stephen John Davies via iNaturalist.

Northern Rough-winged Swallow in Montgomery Co., Maryland (7/4/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC). View Record Details Media by Stephen John Davies via iNaturalist.

Northern Rough-winged Swallow in Montgomery Co., Maryland (4/19/2023). (c) Stephen John Davies, some rights reserved (CC BY-NC). View Record Details Media by Stephen John Davies via iNaturalist.