It’s not just your imagination, crows are taking over Ottawa
Ottawa Citizen

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By Tom Spears, Ottawa Citizen, January 18, 2017

This winter, the Citizen’s Tom Spears looks at what makes our coldest season tick. It’s a series we call The Science of Winter, and today we hear from a birder about why you’re likely to see so many crows together in January.

It’s not your imagination telling you that a murder of crows in central Ottawa had thousands of the birds all together. Ottawa gets that in winter.

There’s nothing subtle about crows. They’re big and loud and yakking all the time, waking up Citizen editors in Centretown long before sunrise, which is partly why you’re reading this. And crows are social, so they flock together, especially in winter. Big group, big noise.

http://ottawacitizen.com/news/local-news/crows-darken-the-ottawa-sky-in-winter