Where Crows Go at Night

This story is brought to you by BirdNote. It is a show that is broadcast daily on public radio stations nationwide.

In the late afternoon of the River River, the crow flowed overhead. These are intentional American crows

They gather in parks and woodlands, fall on trees, fight, shuffle, shout, and filter from branches. The late bird pushed the early birds to the trees. Crow 's expert Bill Gilbert believes that its habitat provides warmth, protection from predators, knowledge of food sources, and opportunities to find spouses

Inexperienced crows can live all night long all year, but adults of reproductive age use habitats only during non-breeding seasons.

How many crows are still living? Everything is different, there are about 100,000 birds in the long-term habitat of Danville, Illinois. People who are not Danville are particularly happy about this. Imagine thousands of hours of crow in the morning making a noise about one hour before sunrise.

If possible, proceed to the habitat of autumn evening crows and look at the acrobat of these birds. Hitchcock's movie "Birds" may come to mind. Warning: If you go, warning: you bring a better umbrella

Telephone of one of the American crows provided by Macquarie Natural Sound Library at Cornell Lab of Orn-thology in Ithaca, Australia. It was recorded by G.A. Keller

Martens Stewart, Naturesound.org, American Ravens group recorded at Foster Island in Seattle

There are few people who know why crows form the dynamics of these public habitat and related populations. The crow seems to reach habitat for a long distance, but not all crows in each region will arrive at a specific habitat every evening. There are signs that some crows may enter the habitat, and there is no elsewhere in a particular night. My own, completely unfounded theory is that the majority of crows living on any night are young, unpaired birds without their own territory. I also think that most young birds will come here most of the night, and if there is a big mating bird with their own area will only occasionally appear. According to this theory, public habitat mainly fulfills social function, birds challenge each other, find potential spouses, and in some way communicate their personal experiences and shared experiences .

Whenever someone talks about crows, the wisest thing is not too obvious. The behavior of crows varies from place to place. But in many places the crows gather in the fall and winter and spend the night in a large public habitat with hundreds to thousands of birds. Birds are reported to have more than 200,000 habitats. Public habitats may stay in one location for a few years, and sometimes from one location to another as the location changes. In the daytime, the number of crows may be distributed in a very wide area, but over 1 hour before dusk, the birds begin to fly to habitat as they get closer to the larger flock. In general, most birds do not fly directly to public habitats, they seem to stop at a nearby "accumulation place".