ChatterBank9 mins ago
swallow nests
6 Answers
not sure which bird makes them (swallows, swifts or housemartins), but how do they make those nests that are stuck underneath/on the side of rafters in barns or houses? and why don't they fall down?
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For more on marking an answer as the "Best Answer", please visit our FAQ.The nests don't fall because the birds are expert at choosing the right kind of mud for their construction.
Some interesting reading about them here
Some interesting reading about them here
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