Feb. 5, 2022: clear skies, wind NW 12MPH w gusts 22MPH, temp at 22F wind chill 10F; sunset time 5:03PM
Met up with members of the Merrimack Valley Bird Club, along with a number of others at the Marston Medical Center along Marston Street in Lawrence. The Crows arrived early tonight and the incoming flight streams, many from the south, just kept coming in until about 35 minutes after sunset time. This image below, looking SSE, and on the east side of the medical building, was captured about 10 minutes before sunset time.
Often times during these incoming flight streams, you have to keep turning your head in different directions to take in all the action. A few minutes after sunset time, we observed flight stream coming in from the west, and quite a sight against the orange yellow sunset sky.
The Crows largely assembled in trees along the north side of Marston Street and back up the sloping hillside. We had one of the most extraordinary nights with an endless series of huge flight bursts from the trees, in a SW/W/NW direction, out over the Marston/Prospect Street intersection. It simply takes your breath away to watch these huge flight movements. The Crows usually will make a large flight circle and return to the general roost area. This image was taken about 22 minutes after sunset time.
It was one of those unusually clear nights with not a cloud to be seen and spectacular sunset sky colors. Close to 30 minutes after sunset time we observed some of the Crows going back and forth from the trees along Marston Street to the trees below along the mouth of the Spicket River. This back and forth action, close to the roost is a very common behavior close to dark, and may be part of the settling in process; always a joy to watch!
The flight bursts continued and then became pronounced when the MedFlight chopper arrived from the SE, and then slowly and loudly descended onto the
nearby Lawrence General Hospital helipad. The helicopter makes very loud noises and also uses and very bright landing light. The reaction among the Crows was spectacular with almost all of them lifting up in flight and returning minutes later. This took place close to 30 minutes after sunset time.
The jaw dropping flight bursts continued a bit longer until almost 40 minutes after sunset time. The vocalizations were loud and raucous as always, until the action subsided and the roost quieted down for the night. Another dazzling Crow Show!!
The 2021 Audubon Christmas Bird Count (CBC) for the Andover Circle, for this separate Crow Count was 12,250 Crows. Last year, the 2020 CBC Andover Circle Crow Count was 15,200. Many thanks to Donna Cooper who coordinates and compiles the Andover Circle each year!
Note on counts/estimates: we are now using improved methods for counting the large number of Crows while streaming, staging, and in the roost. For all images, we use both a modified open source counting software program, as well as a hand count approach to carefully document our observations and to increase reliability and accuracy of the presented numbers.
Remember to check out the newly launched Crow Patrol Podcast: wintercrowroost.com/podcast/
Photo gear used for this outing:
Canon EOS 80D with Canon EF-S 18-135mm f/3.5-5.6 IS
Canon EOS 80D with Canon EF-S 18-135mm f/3.5-5.6 IS (Infrared)
Canon 1DX MK II with Canon EF Telephoto Zoom 100-400mm f/4.5-5.6L IS II USM
Sony AX700 4K HDR Camcorder
ATN BinoX 4K Smart HD Binoculars with photo/video
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Blog post and photos by Craig Gibson, 2022 Crow Patrol
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