Crows are some of the most intelligent birds. They have the highest brain to body ratio of any bird and it explains their incredible ability to learn new things. Take a look below for 24 more fun and interesting facts about crows.

1. Crows have a very developed forebrain, which is where most intelligence is stored. In fact, the anatomy of their brain is very similar to a humans.

2. They can be found on every continent except Antarctica.

3. Their scientific name is Corvus brachyrhynchos and they belong to the Covidase family and the Corvus genus.

4. Ethiopia’s Corvus crassirostris, or thick-billed raven, and the Corvus corax, or the common raven, are some of the largest species of crow. They can get as big as 65 centimeters in length and can weigh as much as 1.5 kilograms.

5. Mexico’s dwarf jay is the smallest species of crow. They weigh around 40 grams and grow to be about 21.5 centimeters in length.

6. Crows first appeared during the Miocene Period, around 17 million years ago, in Oceania and Australia.

7. They’re omnivores, which means that they will eat pretty much anything. For example, they’ve been known to eat rotting carcasses to worm-infested garbage.

8. A group of crows is called a “murder.” They get this name because they’re known for gather and killing a sick or heavily wounded crow.

9. Crows are monogamous. This means that they have only one mate for their entire life.

10. They reach their sexual maturity at the age of 2, but some take a year or two longer.

11. They’re cooperative breeders, meaning that when a female crow is incubating the eggs, other crows, whether they are her mate or not, will watch for danger and protect the female.

12. Both the female and male crow will help take care of the offspring. The offspring are also known for staying with their parents to take care of the newer offspring.

13. Apart from being very intelligent, crows are social birds as well. Each murder will develop a specialized dialect so each crow knows what murder it belongs to.

14. They’re capable of recognizing and remembering human faces. A study done in Seattle showed a group of researchers wearing a type of mask and having several crows tested to see if they recognize the mask. All seven crows, whenever they saw the mask, attacked.

15. In that same study, they didn’t attack the researcher if they wore different masks, just the specific mask that the researcher wore when he was taking the crows from the wild.

16. Crows don’t just remember, they spread the news of the danger to other crows. As the study showed, other crows that were later introduced to the group also attacked the masked researcher, despite never seeing him before.

17. Two years after the researchers in Seattle conducted the experiment, the crows still remembered the mask.

18. Crow meat is edible and is found in some restaurants in the West. It’s considered to be much healthier than pork, having much fewer toxins.

19. They have been known for bonding with humans.

20. They’re migratory birds and will father in large numbers to migrate during the winter and autumn.

21. A test done in 2004 showed that crows were smarter than chimpanzees. This made them the most intelligent creatures after humans, this is why researchers named them “feathered apes.”

22. They’re known for mimicking sounds of others animals and they can associate different commotions to different species.

23. Crows have such a high level of intelligence that it has been seen putting a nut on the highway so that a vehicle could pass over it and crack it open for the crow. It’s also been observed that they will try to find smaller vehicles so that the kernel isn’t reduced to a pulp.

24. While making tools was only known to be performed by humans and apes, a new study found that the New Caledion crow can develop a knife from stiff leaves and stiff stalk of grasses.