Kids throwing stones at the hives?
NO AstroBee no kids I live out in the country on 40 acres no kids around.Kids throwing stones at the hives?
Stonebrood
I started to think same thing last night, i normal do not set on ground i have blocks i use but last inspection i did have a helper and we where all the way down in the hive so its possible that he might have set one of the supers on the ground near by the hive which would explain the stones. Thanks for the help.might you have pulled top box and set on ground while inspecting bottom box? perhaps stones stuck to bottom of box/frames when you picked it up and set back on the lower box.
From Michael Bush ...Aspergillus flavus Link, a fungus, usually is isolated from bees that have stonebrood. This disease is unusual in that it infects both brood and adults. Bees dying from this disease form mummies. The fruiting bodies of the fungus make the infected bee appear yellowish-green or brown.
http://www.beesource.com/resources/usda/diseases-and-pests-of-honey-bees/
Stonebrood.
This is caused by a number of fungi Aspergillus fumigatus and Aspergillus flavus. Extracts from this fungus are used to make Fumigillan used to treat Nosema. Larvae and pupae are susceptible. It causes mummification of the affected brood. Mummies are hard and solid, not sponge-like as with chalkbrood. Infected brood become covered with a powdery green growth of fungal spores. The majority of spores are found near the head of the affected brood. The main cause is too much moisture in the hive. Add some ventilation. Prop open the inner cover or open up the SBB. Treatment is not recommended. It will clear up on its own.
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http://www.bushfarms.com/beespests.htm