Why Fly? Bird Rides Blue Line To O'Hare

(CBS) -- You never know what you're going to see on a CTA train.

Earlier this week, there were reports of nasty bugs.

On Friday afternoon, a lone white pigeon -- or dove? -- was spotted riding on the floor of an O'Hare-bound Blue Line train.

It's anybody's guess what was up with that.

No word if he used a Ventra card to pay the fare.