alleryWhat do many swifts use to glue their nests to a wall?
ASticky tree sap
BQuick-drying saliva
CWet river clay
DMelted beeswax
Answer & Solution
Correct answer: B. Quick-drying saliva
1. Swifts attach twigs to chimney walls or trunks.
2. They anchor them with thick, quick-drying saliva.
3. Sap, clay and wax are not the binder named.
_Source: Wikipedia, Bird nest, Cup_
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