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Larvae infected with EFB pathogen; photo by Robert Snyder Larvae infected with EFB pathogen; photo by Robert Snyder
European foulbrood
Larvae infected with EFB pathogen; photo by Robert Snyder
EFB yellowish larvae; photo by Robert Snyder EFB yellowish larvae; photo by Robert Snyder
European foulbrood
EFB yellowish larvae; photo by Robert Snyder
Removing EFB-infected larva; no roping occurs; photo by Sarah Scott Removing EFB-infected larva; no roping occurs; photo by Sarah Scott
European foulbrood
Removing EFB-infected larva; no roping occurs; photo by Sarah Scott
EFB yellowish larvae twisted in cells; photo by Robert Snyder EFB yellowish larvae twisted in cells; photo by Robert Snyder
European foulbrood
EFB yellowish larvae twisted in cells; photo by Robert Snyder

Note yellowing, twisted larvae in cells (.e.g., yellow arrow), and the prominence of trachea (e.g., green arrow); photo by Robyn Underwood Note yellowing, twisted larvae in cells (.e.g., yellow arrow), and the prominence of trachea (e.g., green arrow); photo by Robyn Underwood
European foulbrood
Note yellowing, twisted larvae in cells (.e.g., yellow arrow), and the prominence of trachea (e.g., green arrow); photo by Robyn Underwood
Twisted larvae characteristic of EFB; photo by Robert Snyder Twisted larvae characteristic of EFB; photo by Robert Snyder
European foulbrood
Twisted larvae characteristic of EFB; photo by Robert Snyder
Early infestation of EFB; photo by Dewey M. Caron Early infestation of EFB; photo by Dewey M. Caron
European foulbrood
Early infestation of EFB; photo by Dewey M. Caron
EFB test kit showing a negative result above, and a positive result below; photo by Dewey M. Caron EFB test kit showing a negative result above, and a positive result below; photo by Dewey M. Caron
European foulbrood
EFB test kit showing a negative result above, and a positive result below; photo by Dewey M. Caron

EFB Test kit; photo courtesy Vita EFB Test kit; photo courtesy Vita
European foulbrood
EFB Test kit; photo courtesy Vita
Excess hive moisture on bottom board; photo by Dewey M. Caron Excess hive moisture on bottom board; photo by Dewey M. Caron
Excessive hive moisture
Excess hive moisture on bottom board; photo by Dewey M. Caron
Drones kicked out of fall colony; photo by The BeeMD photo collection Drones kicked out of fall colony; photo by The BeeMD photo collection
Fall drone removal
Drones kicked out of fall colony; photo by The BeeMD photo collection
Flying drone; photo by Queen Bee Farm California Flying drone; photo by Queen Bee Farm California
Fall drone removal
Flying drone; photo by Queen Bee Farm California

Syrup feeders on top of commercial beekeeper hives; photo by Robert Snyder Syrup feeders on top of commercial beekeeper hives; photo by Robert Snyder
Feeding bees
Syrup feeders on top of commercial beekeeper hives; photo by Robert Snyder
Feeding bees syrup within black jugs on top of colony; photo by Dewey M. Caron Feeding bees syrup within black jugs on top of colony; photo by Dewey M. Caron
Feeding bees
Feeding bees syrup within black jugs on top of colony; photo by Dewey M. Caron
Feeding bees sugar syrup; photo b: Dewey M. Caron Feeding bees sugar syrup; photo b: Dewey M. Caron
Feeding bees
Feeding bees sugar syrup; photo b: Dewey M. Caron
Bees filling in brood cells with fresh nectar or sugar water in preparation for winter; photo by Dewey M. Caron Bees filling in brood cells with fresh nectar or sugar water in preparation for winter; photo by Dewey M. Caron
Feeding bees
Bees filling in brood cells with fresh nectar or sugar water in preparation for winter; photo by Dewey M. Caron

Feeding bees protein patties. which are being placed on top bars of upper box; photo by Chris Hiatt Feeding bees protein patties. which are being placed on top bars of upper box; photo by Chris Hiatt
Feeding bees
Feeding bees protein patties. which are being placed on top bars of upper box; photo by Chris Hiatt
Feeding a protein patty; photo by The BeeMD photo collection Feeding a protein patty; photo by The BeeMD photo collection
Feeding bees
Feeding a protein patty; photo by The BeeMD photo collection
Feeding protein patties; photo by Oregon State University Feeding protein patties; photo by Oregon State University
Feeding bees
Feeding protein patties; photo by Oregon State University
Fermenting honey bubbles in cells containing crystallized honey; photo by The BeeMD photo collection Fermenting honey bubbles in cells containing crystallized honey; photo by The BeeMD photo collection
Fermented honey
Fermenting honey bubbles in cells containing crystallized honey; photo by The BeeMD photo collection

Fermenting honey bubbling in cells; photo by The BeeMD photo collection Fermenting honey bubbling in cells; photo by The BeeMD photo collection
Fermented honey
Fermenting honey bubbling in cells; photo by The BeeMD photo collection
Fermenting, bubbling honey in cells; photo by Rusty Burlew Fermenting, bubbling honey in cells; photo by Rusty Burlew
Fermented honey
Fermenting, bubbling honey in cells; photo by Rusty Burlew
Fermenting nectar; see arrows; photo by Dewey M. Caron Fermenting nectar; see arrows; photo by Dewey M. Caron
Fermented honey
Fermenting nectar; see arrows; photo by Dewey M. Caron
Festooning; photo by Carolina Honeybees, IIC Festooning; photo by Carolina Honeybees, IIC
Festooning
Festooning; photo by Carolina Honeybees, IIC

Festooning bees building beeswax comb; photo by UC Davis Festooning bees building beeswax comb; photo by UC Davis
Festooning
Festooning bees building beeswax comb; photo by UC Davis
Festooning bees; photo by Beekeep Club Festooning bees; photo by Beekeep Club
Festooning
Festooning bees; photo by Beekeep Club
Fruit fly on citrus; photo by BUGS-FOR-BUGS Fruit fly on citrus; photo by BUGS-FOR-BUGS
Flies
Fruit fly on citrus; photo by BUGS-FOR-BUGS
Flies and yellowjackets feeding at external Boardman sugar syrup feeder; photo by Dewey M. Caron Flies and yellowjackets feeding at external Boardman sugar syrup feeder; photo by Dewey M. Caron
Flies
Flies and yellowjackets feeding at external Boardman sugar syrup feeder; photo by Dewey M. Caron

Forager on apple; photo by Elaine Timm

Forager on apple; photo by Elaine Timm
Foraging

Forager on apple; photo by Elaine Timm

Bee forager on Tea tree; photo by Kathy Keatley Garvey Bee forager on Tea tree; photo by Kathy Keatley Garvey
Foraging
Bee forager on Tea tree; photo by Kathy Keatley Garvey
Forager returning to hive with full pollen baskets; photo by Robert Snyder Forager returning to hive with full pollen baskets; photo by Robert Snyder
Foraging
Forager returning to hive with full pollen baskets; photo by Robert Snyder
Worker bee covered in yellow pollen; photo by The BeeMD photo collection Worker bee covered in yellow pollen; photo by The BeeMD photo collection
Foraging
Worker bee covered in yellow pollen; photo by The BeeMD photo collection