How to tell a Raven from a Crow

Without reading your article - I think it has something to do with the shape of the tail (one is rounder and the other squared) and possibly the color (one is black-black and the other is purple-ish-black) ? ? Maybe the shape of the beak too???

Although I don't know which is which. They are all "crows" to me.

Edited to add.  I just read the article and I was close.  

I saw the ravens at the Tower in London and have been fascinated with them since. They are huge.

It's a matter of a pinion.

So timely... About to renew an old friendship with one of the Ravens at the Tower, Merlina.

Am I the only one that thought they were just different names for the same bird? Probably so. 😖

That was interesting, thank you.

We had a really strange experience in our backyard when I was a child. Very early in the morning, a large black bird that we thought was a crow landed on the grass area and was obviously very sick. It was making noises and fluttering around, then laying down and calling out. It was very upsetting. Being a bird lover, I went out to see if there was anything about the bird that I could fix. I've removed fishing line and hooks from birds over the years, and wanted to know if I could help this bird. I couldn't see anything tangling it up and my mom told me not to touch it without gloves on. I went back inside and we all stood in the window upstairs watching this poor bird. I was in tears because I could see it suffering.

Then suddenly, there were dozens of big crows (or ravens?) on all of the wires and in the trees in surrounding my backyard. They were all calling out and one or two of them would fly down to the bird on the ground and check it out. The rest of the birds were making one heck of a noise. Once again, the bird on the ground fell over to its side. All of the birds stopped making noise at once. They just looked, as my whole family was doing from the upstairs window. Everything was deadly silent. Then one bird flew down to the ground, looked the bird over, and flew back to the wires. Seconds later, every bird in the yard flew away at once. It was the strangest thing I'd ever seen regarding birds. My little sister said that the dying bird was the king of the crows, and that someone must have poisoned him. Once he died and they all flew away, she decided it was to vote on a new king.

I went out back again and dug a huge hole in the planters and buried the bird, picking it up with gloves on just in case it had something that could hurt me. I've never seen crows all upset en masse like that before. I was impressed that they all seemed to realize this bird was dying and it was obviously very upsetting to them. I had also never seen that many crows in the area, so they had to have all gotten the news and came together to witness this crow die. It was so odd, yet so touching at the same time. I wondered how they knew it was actually dead, because it had been moving and stopping all the while it was down there. I also wondered how they became aware of its distress, and what made them come to witness it. When it was making noises, it wasn't very loud. Not loud enough to carry to wherever these crows were anyway.

Where I live now, I see many crows or ravens daily. There is a very large area of eucalyptus trees near my house and it is frequently filled with crows.

With West Nile virus the crows are all gone here!!

Now I know for sure that the super loud birds that sit above the hospital entrance are indeed ravens. Which makes it even more creepy.

Crows and ravens are so smart. Really cool birds.

Actually my DD and I were talking about this earlier this week. I meant to look it up myself, but you saved me the trouble ☺