The poster not only shows the unpopular residents and names them (they sound akin to birds and mushrooms) it also details their staying power, e.g. yellow shellthing 1-3 years (aka: slippolus bananicus or a banana skin), warbling swallow up to 50,000 years (aka: liquor cadaveri or glassy shot bottle), or cupped paper muggy up to 5 years (aka: cofficus warmicus or paper coffee mug).
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pictures imperfect blog 
Grrr. I wish they’d all become endangered species!
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Clever way to draw attention to them. We have a few parks that could use signs like this.
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Don’t tell the Swiss, otherwise they might put such a sign in my garden.
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Not really!
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Interesting. I’d stop for a read and think twice for sure.
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Very inventive 👍😀
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Preaching to the converted, I fear.
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