Crow Patrol

Crow Patrol2020-12-27T21:32:43-04:00


Winter Crow Roost: streaming in from upriver!

Conditions: clear skies, wind N at 5MPH, temp at 35F: sunset time 4:14PM Out on Crow Patrol for almost two hours, starting just before sunset time with looks at staging Crows near the airport and along the Merrimack River. Next stop was along South Canal Street with Crows arriving minutes before sunset time with lots of vocalizing. Huge streams [...]

Winter Crow Roost: staging around Casey Bridge!

Conditions: partly sunny, wind NW at 14MPH, gusts 30MPH, temp at 42F; sunset time 4:15PM Out on solo Crow patrol with first stop along the Merrimack River on east side of Rt. 495 Bridge to watch Crows staging downriver. The Crows were working their way upriver in advance of sunset time and leapfrogging along tree tops in growing numbers. [...]

The Green Team: Crow Project Presentation

In January 2020, the Groundwork Lawrence "Green Team" was invited to be a part of a journey in learning about the Winter Crow Roost in the Merrimack Valley. Amazed by this yearly crow phenomenon, the Green Team members, all high school students, have learned about the staging and roosting behaviors of both American and Fish Crows.  In addition, they [...]

Winter Crow Roost: from Mill240 Park!

Conditions: mostly cloudy, wind W 5MPH, 41F; sunset time 4:19PM Out on solo Crow Patrol making initial observations from the Mill240 Park area. This shows swarms of Crows taking off in flight from the roof of the SmartCube building about 10 minutes after sunset time. This next image shows flight action over the truck depot area about 20 minutes [...]

Winter Crow Roost: to the Casey Bridge!

Conditions: overcast skies, wind W at 13MPH, gusts to 20MPH, temp at 47F; sunset time 4:20PM Out on Crow Patrol with first stop at the Incinerator Road ball field area watching Crows streaming towards roost at low elevations from the nearby municipal airport and the wooded area beyond, all located downriver from the overnight roost area. This image was [...]

Winter Crow Roost: staging at B&D Warehouse

This video shows staging Crows lifting off in flight! Conditions: heavy overcast skies, wind S at 13MPH, temp at 71F; sunset time 4:25PM Out on Crow Patrol with first stop at roof top overlook at McGovern parking garage with a huge buildup of Crows at west end of the B&D Warehousing complex. At the west end of [...]

Winter Crow Roost: pellets!

The Winter Crow Roost is back in full swing with growing numbers each week! We are now able to once again search and collect ejected Crow pellet samples from areas near the overnight communal roost. Once again, we are making a big effort to search for and discover the pellets left behind by the Crows. According to Birds of [...]

Winter Crow Roost: converging into the roost

This video shows a stunning time lapse sequence of Crows landing in the roost! Conditions: clear skies at dusk, wind SW at 5MPH, temp 67F; sunset time 4:26PM Out on Crow Patrol for just over 75 minutes with first stop atop McGovern parking garage, with initial but smaller than normal group of American and Fish Crows starting [...]

Crow Scientist: a new Science App for Kids!

On Sept. 17, 2020 The School of Environmental and Forest Sciences in the College of the Environment at the University of Washington announced the release of a terrific new birding app about crows for use by kids. Here's the information from U of W: New app encourages kids to find interest in neighborhood crows A new app developed by School [...]

Winter Crow Roost: new Photography Guide!

The Crow Patrol is pleased to announce that we have just published and released the new "Winter Crow Roost: Photography Guide". The exciting new 3 page PDF guide is meant to help photographers at all skill levels in their efforts to capture pleasing images of the Winter Crow Roost phenomenon while out in the field. After endless group tours [...]

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