Spring Came Early at Shelburne Farms 3/3/20

On Tuesday, March 3rd, I took advantage of the nice weather and walked the paths of Shelburne Farms. I was able to spend a good chunk of time there – arriving at 11:00 am and leaving at 1:45 pm. It was about 48 degrees Fahrenheit, mostly sunny, and calm. It seemed that the nice weather also brought out many birds as I observed 22 species that afternoon.
Although the weather was enjoyable, it was uncharacteristically warm for that time of year, so many birds were likely more active than usual. However, I did notice some characteristics of energy saving activities. Walking past the cattle barn, I saw many Rock Pigeons, House Sparrows, and European Starlings in with the cows. While this provides them with easy food, it also provides them with warmth and shelter. I imagine this is also where the Rock Pigeons roost overnight. However, the House Sparrows likely take shelter as a flock in the dense brush around the barn overnight. Perhaps the European Starlings spend the night in the large eastern white pine stand next to the barn where they get dense cover.
Some other species of birds I observed were often feeding in mixed flocks. I imagine this can be quite beneficial in the winter because territorial disputes may be less frequent, and it allows the birds to feed more efficiently. With more eyes looking out for potential predators, each individual bird can be more comfortable in spending longer periods of time feeding. They were mostly feeding on trees with any remaining fruit on them. I imagine that once it gets warmer, these birds will start feeding more actively and individually.
However, one species that I hadn’t seen since warmer times, the Eastern Bluebird, was acting as if it were spring. I observed many of these birds, and the majority of them were quite vocal, and hunting regularly for what I imagine were insects. These activities take up energy, so perhaps the warmer weather allowed them to hunt more successfully. I also observed a few of these birds hanging out around a bird box. These bird boxes throughout the property may be where they spend the nights.
As I was walking the trails, I saw many snags. I find it nice to see snags because they provide so many great uses for birds. Unfortunately, the majority of people find them to be unattractive, so many get cut down. However, when standing, snags provide a great place to nest or spend cold nights for some species. Snags often get infested with insects or a fungal disease. The insects attract woodpeckers and other bird species which start to carve out cavities while hunting. A fungal infection often makes the tree weaker and rot which can also create cavities. Of the birds I saw, many of them were cavity nesters. So, once spring arrives, these snags could potentially provide desirable places to nest. For now, these cavities can provide great roosting habitats. For the Black-capped Chickadees, they may roost in large groups to help conserve body heat. In fact, I did see a large group of chickadees hanging out around one snag with a prominent cavity in it. I tried knocking on a few snags to see if anything was inside, but nothing showed itself. Perhaps if I was there later in the afternoon some birds or other animals would have returned to their cavity for the night.

Posted on 06 de março de 2020, 03:16 AM by phil_stoll