To be clear, there's absolutely no evidence to suggest that the crow in this video knows what a credit card is for, or how ticket machines work… but, based on what we know of corvid intelligence, we wouldn't be surprised if it was trying to figure it out.
We know crows are like, really smart, but are they use-a-credit-card-to-buy-a-train-ticket smart? Well, actually… maybe. One crow has been caught in the act of appearing to try just that after stealing a woman’s credit card in Japan.