- How far away do you suppose the railroad is?
- Oh, not so far as the crow flies.
- We ain't crows.

5 seconds sound clip from the The Treasure of the Sierra Madre movie soundboard.

You can hear this line at 01:31:07.993 in the Blu-ray version of the movie.

Quote context

[...]

- All right. We can't go any further.

- Who says I can't? Don't make me laugh. I can go 4 times as far as a mug like you, but I don't want to. I could if I wanted, but I don't want to, see, mug?

- Oh, what's the use of hollering? We're started on something and we got to finish it, like it or not. We'll camp here.

- Wonder what the old man's doing now.

- Eating a meal of roast Turkey and drinking a bottle of Tequila, probably.

- This the first day we've had to handle everything without his help. Once we get the hang of it, it'll be a lot easier.

- How far away do you suppose the railroad is?

- Oh, not so far as the crow flies.

- We ain't crows.

- I figure we can reach the high pass in 2 days more. After that, it'll be 3 or 4 days to the railroad. That's figuring no hard luck on the trail, of course.

(Dobbsy laughing)

- What's the joke, Dobbsy?

- Aren't you going to let me in on it?

- In on it? Sure, I will. Sure.

[...]