Abalg / Wikipedia, Tiny Fox Lab
Propolis or bee glue is a resinous mixture that honey bees produce by mixing saliva and beeswax with exudate gathered from tree buds, sap flows, or other botanical sources.
It is used as a sealant for unwanted open spaces in the hive.
Propolis is used for small gaps, while larger spaces are usually filled with beeswax. – Tiny Fox Lab
Preview photo credit: Abalg / Wikipedia
Source: https://en.wikipedia.org/wiki/Propolis
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