Because chickens can't see where they are going in the fog. Unless it's a fog chicken, and there's no such thing as a fog chicken.
11 seconds sound clip from The Goon Show, Series 9, The Mountain Eaters classic radio program.
You can hear this line at 00:13:53 in the radio play.
Quote context
[...]
- Gentlemen, the chairman has just died.
- We will send a fresh husband to the widow as soon as the weather permits.
- Now, as he was saying... (chicken sounds)
- Oh dear, Min, Min, oh Min, hold this chicken. Be careful, she's ..
- I'm sorry, dear, I don't know why you have to carry a chicken around.
- Well, It's the fog. I always carry one when there's a fog.
- What are you talking about? There was no fog today.
- Well, this isn't a fog chicken.
- Get on with the meeting! I've got a cricket ball to catch!
- Oh, mate, you've ruined my mountain-eating chances.
[...]
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Actors: Peter Sellers (Bloodnok / Bluebottle/ Grytpype-Thynne), Spike Milligan (Eccles / Minnie Bannister), Harry Secombe (Neddie Seagoon)
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