I do not know. I think intelligence in animals is often linked to how much social interaction they have to do. It is more important to be smart if you have to negotiate your way through interactions with other people (or crows) without slipping up and making a mistake that could get you in trouble (or, as a crow, pecked a lot).
There are several animals that seem able to recognise themselves in the mirror. These include most apes, some monkeys, elephants, dolphins (possibly), and crows. Most other animals treat their reflection like someone else and are scared or aggressive towards it.
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elenahegarty commented on :
thanks guys 🙂 also, because magpies are related (cousins i think) to crows, do you think they can do so as well?