That seems to be the common pattern that I am reading about, Dave, once loose they will return for a period, then you see them no more. I guess you can only wonder if they are still alive. There is a lot of things on the web about taking in crows, why you shouldn't do it if there is the idea to want to release them at some point. One idea is to leave them on the ground if they have fallen from a nest, the parents will likely feed them until the point is reached where the youngster can fly. Says it isn't uncommon for that to happen. I didn't see that as an option if the bird could survive. It wasn't in thick brush and out of sight, but in the middle of a dirt road that gets traffic, and there are predators around. There is some question as to if it takes off, can it survive, and also crows can have a problem becoming socially integrated after being raised to a certain point away from a group. Beyond a certain time it is said that it is impossible to raise them and have them be contented, they will cower away from humans.
The crow doesn't seem all that young, on the verge of flying. How many weeks would that be? It chilled right out from the beginning, and basically seems rather content. Who knows? I'm not really sure if it is legal to keep them, once they can fly, if one wants to go by the book. Anyway, I'll try and keep it in good health and see how the desire for a take off goes. I took it in, so I think i should be dutiful to that responsibility at least. Have to say, it is cool going for a spin on the bike with it on the handlebars. It digs the breeze, watches the birds flying around or pays no attention to them, much like riding with a little kid. if I open the door on it's cage, it immediately comes right out to the exterior perch. Not being inside is definitely the preference, but sometimes it goes back in on it's own. Perhaps it was a chicken in a previous life?