I'll have to be a bit stronger than that.

5 seconds sound clip from the The Snow Goose (1954) classic radio play.

You can hear this line at 00:04:10 in the radio play.

Quote context

[...]

- Will she be able to fly again?

- Oh, yes. These primaries, these big wing feathers, they'll grow in the spring. And then she'll be able to fly as well as ever.

- But I'm going to bandage the wing close to the body, so that she can't move it until it's set, you see?

- Now we'll have to make a splint for a poor leg.

- Shall I hold her, sir?

- Yes, that's right. You hold her while I find a splint among this firewood here.

- Well, these twigs will do, I think.

- I'll have to be a bit stronger than that.

- After all, she's a big bird, isn't she?

- Aye.

- It were all I could do to pick her up and carry her to you.

- Yes, it must have been.

- Why don't you bring her in to me, I wonder?

- I heard tell that he keeps birds in cages, and feeds them and looks after them, and won't let no one go shooting at them in your land.

[...]