That is a proper term.

It refers to crows in numbers, just as we would say "a flock of sheep," or "a herd of cows."

However, in this case, crows by the thousands are seen taking wing moments before a massive 6.2 earthquake devastated a province in China, killing many and forcing thousands outdoors in freezing temperatures.

Inclusion of this video link is by way of a reminder that while Trump's tribulations are certainly important to the future of America, an earthquake of this magnitude, though far away from the United States, should be a reminder that Nature itself is ramping up its seismic and volcanic activity.

America is not immune from that - the West Coast in particular - although there are also legitimate concerns about the potential for seismic and volcanic activity in the Atlantic.

Earthquakes or underwater volcanic eruptions in the Atlantic or Pacific could (will) spawn widespread collapses in many cities, and tsunamis should also be of concern - in advance, rather than waiting for them to happen without warnining.

I have mentioned previously that I experienced a 5.2 magniotude 'quake while seated on the 7th floor of a highrise building in New Zealand...that was enough to have me move from the city as soon as possible.

Now that I live in America, I made sure to settle far from the ocean - although having Mt St Helens, Mt Adams and Mt Rainier not too far away could be a bit of a worry.

Anyway, the video from China is very well done.

https://www.youtube.com/watch?v=UTJNf7gnBBQ