I’ve encountered dead bees in and around hives many times over the years, and it never gets easier to see. In some cases, losses are gradual and expected, but in others, the signs point to something sudden and external. Learning how to read those signs has been critical for understanding when a colony problem is within my control and when it is not.
Seeing bees with their tongues extended is one of those visual clues that immediately raises concern. It is something I now take seriously and investigate right away, because it often signals an acute exposure issue rather than a slow, internal hive decline.
When dead bees are found in piles with their tongues sticking out, the most likely cause is acute pesticide poisoning.
This guidance applies primarily to managed backyard and small-scale honey bee colonies in agricultural, suburban, or mixed-use environments.
Finding dead bees in your hive is always heartbreaking. But examining the dead bees and noting their location and their condition can help you understand what is wrong with your hive’s health.
If your dead bees have their tongues sticking out, they probably died from pesticide poisoning. When bees are poisoned, their bodies are often found in piles. A large pile of bees, all of which have their tongues out, indicates that your bees have access to some sort of chemical or pesticide that is killing them.
The first time I encountered this, the suddenness of the losses was what stood out most. Healthy colonies do not collapse overnight without a strong external trigger.
You can also examine the behavior of living bees to determine if you have a poison problem. If some of your bees are behaving strangely, they may have been exposed to poisonous pesticides in non-lethal doses. Bees that have consumed small amounts of poison may be unable to fly, or they might shake or run in strange patterns inside the hive or otherwise behave in erratic ways. They might also act more aggressive than usual.
I’ve learned to watch for this erratic behavior before large die-offs occur, as it can be an early warning sign.
Many chemicals that humans use are toxic to bees. If you notice that your bees are dying, find out if they are exposed to any pesticides. If you live in a suburban neighborhood, check with your neighbors to see what kind of chemicals they use on their land. If you live by farmland, try to find out what kinds of pesticides are being used nearby. There are many insecticides that are bee-friendly, but in general insecticides are more harmful to bees than fungicides and herbicides are.
In situations like this, documentation and communication matter more than confrontation.
Every state in the US has its own Pesticide Regulatory Agency, which works with the Environmental Protection Agency to enforce federal pesticide rules. You can contact your state’s Pesticide Regulatory Agency to find out more about the kind of pesticides are allowed in your state and what kind of notice needs to be given before they are administered. The agency can also help you if you believe that neighbors are misusing pesticides.
Having these agencies as a resource can be reassuring when losses feel completely out of your control.
Why Am I Finding Dead Bees On the Ground?
While pesticides and chemicals pose a real threat to bees, there are many other reasons that bees die. Honeybees face many challenges in today’s world, and their numbers have been declining because of agricultural practices, parasites, and changes in weather brought on by climate change.
If you find dead bees on the ground near your hive, they might have died from natural causes. Worker bees will literally work themselves to death, and if the dead bodies are scattered around and not in one single large pile, they probably died naturally. You might be alarmed at the number of dead bees that you find, but if you have several hives it’s normal to have a decent number of dead bees. A healthy hive has around 50,000 bees in it, and new bees are hatching every day. As new bees hatch, old ones die off. Losing 1,000 bees in one day is to be expected.
Understanding this helped me stop overreacting to normal hive losses early in my beekeeping journey.
Bees might also die because of changes in weather. If you have a sudden, unexpected cold spell, worker bees can freeze to death while they are out foraging. If you have a longer winter than expected, your bees might not have enough food stores to feed them until spring, in which case a large percentage of your hive will die.
Weather-related losses are frustrating because they are often unavoidable, even with good planning.
Bees die inside the hive as well as outside of it. When bees die inside the hive, their bodies are carried out of the hive and left outside. Removing the dead bees keeps the hive healthy and clean. This process of removing dead bodies even has a name, it’s called necrophoresis. There are specific bees, called undertaker bees, that are responsible for removing bee carcasses and other debris.
Seeing this behavior in action is actually a reassuring sign that a colony is functioning normally.
How Do I Prevent My Bees From Dying?
Bee deaths can be disheartening for any beekeeper, and unfortunately, some factors are beyond our control. Environmental pesticide exposure, extreme weather, diseases, and natural life cycles all contribute to colony losses. While not all causes of bee death are preventable, there are proactive steps you can take to encourage the health of your hives and reduce unnecessary losses.
Minimize Pesticide Exposure
Pesticides are one of the most significant threats to bee health. They can shorten bees’ lifespans, impair their ability to fly, reduce fertility, weaken their immune systems, and ultimately lead to colony collapse.
Avoid using pesticides or herbicides in your yard
Engage with your neighbors about bee-safe practices
Choose pesticide-free plants for your landscape
If pesticide exposure is suspected, monitoring overall colony health becomes even more important. Regular inspections and early intervention can sometimes prevent total collapse.
Provide A Clean And Accessible Water Source
Bees require clean water for drinking, regulating hive temperature, and feeding brood. Without a reliable water source nearby, bees may seek water from unsafe locations.
Place shallow water sources near the hive
Add landing materials to prevent drowning
Providing water close to the hive reduced risky foraging behavior in my own apiary.
Monitor And Manage Pests
Parasitic infestations are another major cause of colony losses. Varroa mites, in particular, weaken bees and transmit viruses.
If you are not already doing so, learning proper monitoring and treatment strategies is critical. See our detailed guide on The Beekeeper’s Ultimate Guide to Varroa Mites and how to build a sustainable treatment plan using Integrated Pest Management (IPM).
I’ve found that colonies with regular mite monitoring fare significantly better than those treated reactively.
Prepare For Winter
Winter losses are often tied to food shortages or poor insulation.
Leave adequate honey reserves
Supplement food when necessary
Insulate and ventilate properly
Inadequate winter preparation is one of the most common preventable causes of colony loss I see among newer beekeepers.
Final Thoughts
To keep your bees healthy and productive, you have to think like a detective. You should be able to look at a dead bee and decide, based on its appearance and location, what its probable cause of death was. If a bee is found lying among many other bees with its tongue sticking out, it was likely poisoned. If it is found alone on the ground, it may have died naturally. If there are dead bees inside your hive, parasites or disease may be involved.
Some bee losses are unavoidable, but large, sudden die-offs are not something to ignore. Understanding the warning signs allows you to act quickly and protect your remaining colonies. This article was updated in 2026 to reflect current beekeeping practices and hands-on experience working with active hives.