Winter is not the time to go lifting hive lids and breaking propolis seals — doing so can disrupt the bees’ hard-won warmth and expose them to deadly cold and moisture. But that doesn’t mean you should ignore your hives altogether. Careful, minimal-intervention checks from the outside can tell you a lot about how your bees are doing.
Here’s what to look for during winter hive checks — without opening the hive.
1. Listen for the Buzz
Bring your ear close to the side of the hive (or use a stethoscope if you want to be fancy). A healthy colony will give off a quiet, steady buzz — a sign that the cluster is alive and keeping warm. No noise doesn’t always mean trouble, but it may warrant closer attention if you’re unsure.
2. Watch the Entrance on Warm Days
When the temperature rises above 10–12°C, you might see bees flying in and out of the entrance. These are likely cleansing flights — bees leaving the hive to relieve themselves after holding it in for weeks. Seeing this is a good sign your colony is active and healthy.
No activity on cold days is normal, but no activity on multiple warm days may suggest the hive is struggling.
3. Check for Dead Bees
Some dead bees at the entrance or nearby is perfectly normal — the colony clears out its dead when it can. But if you’re seeing large numbers, or dead bees with deformed wings or signs of disease, it’s worth making a note to investigate further in spring.
4. Look for Moisture Problems
Moisture is more dangerous to bees than cold. Check the hive roof and boxes for signs of condensation, dripping, or mould. Ensure ventilation is working as intended — ideally, warm moist air can escape while cold air stays out.
A small top entrance or vent can help reduce condensation build-up without creating cold drafts.
5. Heft the Hive (If You Can)
Gently lifting the back of the hive can give you an idea of its weight. A light hive could mean the bees are running low on food stores. You don’t want to open it, but you might consider placing a sugar board or fondant on top if you think they’re running short.
6. Inspect the Surroundings
Look for signs of animal damage (like possums or mice trying to get in), or weather-related damage to hive stands, roofs, or straps. Make sure everything is still level, secure, and above any pooling water.
A quick five-minute check every couple of weeks is all it takes. With your bees quietly clustered inside, your job is to keep them protected, dry, and fed, while letting nature do the rest. Come spring, you’ll be glad you kept a watchful (but gentle) eye on them.
