[Art]

Bees are going crazy and dropping dead, while there are flies casually walking on the outside of the nest, can someone please explain this?

 

[Barry Digman]

Bees dropping dead is a symptom of poisoning.

 

[beesohappy]

Sounds like you need to open the lid and have a look inside. Then let us know what you see.

 

[Oldtimer]

Poisoned bees, flies attracted by rotting bees?

Just a guess cos not really enough info given.