Why Are Honeybees Making Mummies?

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Sure, honeybees make delicious honey. But have you ever heard of propolis, the spitty glue they use to mummify intruders?

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Sources:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3655583/
http://journalofsocial.com/Makaleler/213028773_6.%20ID310_6-26.%20Ero%c4%9flu&Y%c3%bcksel_623-629.pdf
https://www.researchgate.net/publication/46421115_Propolis_and_bee_health_The_natural_history_and_significance_of_resin_use_by_honey_bees
http://extension.msstate.edu/newsletters/bugs-eye-view/2017/mouse-mummy-vol-3-no-7
https://www.hindawi.com/journals/ecam/2013/964149/
https://www.beeculture.com/processing-propolis-part-1/
https://www.sciencedirect.com/science/article/pii/S0753332220308155
https://link.springer.com/article/10.1007/s00359-021-01464-8

Image Sources:
https://www.storyblocks.com/video/stock/slow-motion-shot-of-cool-honey-bees-working-on-their-hive-byhfehav-j4u4tmkl
https://commons.wikimedia.org/wiki/File:Propolisstücke.jpg
https://commons.wikimedia.org/wiki/File:Propolized_bars_joined_together.JPG
https://www.istockphoto.com/photo/caulking-concrete-by-brick-close-up-gm1176426949-327987110
https://commons.wikimedia.org/wiki/File:Propolis_in_beehives.jpg
https://commons.wikimedia.org/wiki/File:FrieseomelittaVaria.JPG
https://www.istockphoto.com/photo/honeybee-with-varroa-mite-sitting-on-honeycombs-gm832486988-135436335
https://commons.wikimedia.org/wiki/File:CSIRO_ScienceImage_1888_Small_Beetles_in_a_Hive.jpg
https://www.istockphoto.com/photo/wood-mouse-on-root-of-tree-gm492696926-76459407
https://www.storyblocks.com/video/stock/the-beekeeper-gets-a-frame-from-the-hive-rcxzvxrkbj701puvl
https://en.wikipedia.org/wiki/File:Apis_mellifera_scutellata_1355021.jpg
https://www.istockphoto.com/photo/hives-close-up-in-a-winter-garden-with-snow-cover-on-a-sunny-day-gm1177404900-328684945
http://extension.msstate.edu/newsletters/bugs-eye-view/2017/mouse-mummy-vol-3-no-7
https://commons.wikimedia.org/wiki/File:Starr-180731-0558-Prosopis_pallida-bee_hive_with_small_hive_beetle_Aethina_tumida-Kahului_Airport-Maui_(30832819788).jpg
https://commons.wikimedia.org/wiki/File:AncientEgyptianRelief-BeeHieroglyph-ROM.png
https://commons.wikimedia.org/wiki/File:Karnak_titul_ramses_2c.jpg
https://commons.wikimedia.org/wiki/File:Honey_bees_with_propolis_and_wax.jpg