Your proposed interpretation is not at all "equally valid." Eggs and bananas are real physical items. A nest with three eggs in it is in no way equal...
Water in Wisconsin marshes is typically clean, but very dark--stained by tannins, not muddy. But definitely they are often stream-based, like this:
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I don't suppose too many people will be surprised to see me suggest Ross Lillistone's Phoenix III design--a great boat that I've sailed lots of miles...
I think the people being fooled by the egg baskets and bananas puzzle are the ones who think it is ambiguous. Sure, there's some trickery there. But...
Not really a traditional rig in the (former) colonies, is it? But I like it a lot. It's still kind of a toss-up for me whether I like it better than...