I was browsing reddit and found these videos.
I thought I was construction because a redditor posted this link in the thread.
Also in this video, they pretty much say it is a hoaxed video because they interviewed people and none of them said they heard any of these sounds.
But in the first video and This link show that there is no construction occurring in windsor. The sound is coming from an unknown source and they have brought in government officials to try to determine the source of this sound.
http://www.windsorstar.com/Mystery gains another believer/5251125/story.html
Also another very similar article to the last one.
A wikipedia link to the phenomenon
My question to the tl community is what is the source of these sounds? What do you think?
Edit: Thanks to caradoc for putting this up. Now that we can see it looks like that, the sound in Kiev most likely manufactured or a hoax. This perfectly lines up with the Ukranian news report that says it is a fake. But still doesn't answer the Windsor one. I guess we just have to wait for more information regarding that one.