Hive Inspections

Part of Beekeeping

Regular hive inspections are the beekeeper’s primary diagnostic tool. Knowing what to look for and how to interpret what you see separates thriving colonies from lost ones.

Opening a beehive is both a privilege and a responsibility. Every inspection disturbs the colony’s carefully regulated environment — temperature, humidity, and the pheromone signals that coordinate tens of thousands of workers. The goal is to gather maximum information with minimum disruption, then close up and let the bees get back to work. This article covers the complete inspection process: scheduling, equipment, reading frames, identifying problems, and maintaining records that guide your management decisions.

Inspection Schedule

The frequency of inspections depends on the season, colony condition, and what you’re managing for. Over-inspecting stresses colonies; under-inspecting lets problems spiral out of control.

Season	Frequency	Primary Goals
Early spring (first warm days)	Once, brief	Confirm queen alive, food stores adequate
Spring buildup (daily highs above 55°F)	Every 10-14 days	Monitor brood expansion, watch for swarm prep
Peak season (main nectar flow)	Every 7-10 days	Swarm prevention, add supers as needed
Late summer	Every 10-14 days	Assess honey stores, check queen status
Fall	1-2 inspections total	Verify winter food stores, treat for mites
Winter	Do not open hive	External observation only (entrance activity, heft weight)

The 7-10 Day Rule During Swarm Season

Queen cells take 16 days from egg to emergence. If you inspect every 10 days, you will always catch queen cells before a virgin queen emerges and leaves with a swarm. Missing even one inspection cycle during peak season can cost you half your colony.

Equipment for Inspections

Essential Tools

Smoker: The single most important tool. Cool, white smoke triggers bees to gorge on honey (preparing for a possible fire evacuation), making them calmer and less defensive. Use dried pine needles, burlap, dried grass, or punky wood as fuel. The smoke should be cool enough to hold your hand over the opening comfortably.

Hive tool: A flat metal pry bar for separating frames glued together with propolis. Bees seal every crack with this sticky resin, and frames will not come apart without leverage. A sturdy flathead screwdriver works in a pinch, but a proper hive tool with a bent end is far more efficient.

Protective gear: At minimum, a veil to protect your face and eyes. Full suits provide confidence for beginners. As you gain experience, you may work with less protection, but always wear a veil — a sting near the eye can cause serious injury.

Optional but Useful

• Frame grip: Spring-loaded pliers that clamp onto frame ears, useful for lifting frames straight up without rolling bees
• Bee brush: Soft-bristled brush for gently sweeping bees off frames you need to examine closely
• Spray bottle with sugar water: An alternative to smoke for brief inspections — mist lightly over open frames

Smoker Technique

Light the smoker well before approaching the hive. Pack fuel loosely enough for airflow but tightly enough to stay lit. Give 2-3 puffs at the entrance, wait 30 seconds, then remove the outer cover and give 1-2 puffs across the top bars. Less is more — heavy smoking drives bees deep into the comb and makes them harder to observe.

Opening the Hive

Work from the side or back of the hive, never blocking the entrance. Bees returning from foraging will collide with you if you stand in their flight path.

Step-by-step process:

1. Smoke the entrance (2-3 gentle puffs)
2. Wait 30-60 seconds for smoke to penetrate
3. Remove the outer cover, set it upside-down nearby as a platform
4. Crack the inner cover with your hive tool, give a light puff of smoke
5. Remove the inner cover
6. Begin with an outer frame (usually honey or empty) — these are easier to remove without rolling bees
7. Set the first frame aside, leaning it against the hive
8. Work inward, examining each frame before moving to the next
9. Slide frames toward the gap left by the removed frame to create working space

Crushing the Queen

The most common way to accidentally kill a queen is by crushing her between frames. Always slide frames apart gently, look before setting frames down, and never slam frames together. If you see the queen, note her location and work away from her.

Reading Frames: What to Look For

Brood Pattern

A healthy brood pattern is the most important indicator of colony health. Look for:

• Solid pattern: Capped brood should cover most of the frame center with few empty cells. A “shotgun” pattern (many scattered empty cells among capped brood) indicates a failing queen, disease, or inbreeding
• Concentric rings: Eggs in the center, then larvae in various stages, then capped brood, then pollen, then honey around the edges
• Eggs: Tiny white rods standing upright in cell bottoms. Finding eggs means the queen was active within the last 3 days. Use the sun over your shoulder to illuminate cell bottoms
• Larvae: White, C-shaped grubs floating in a pool of royal jelly. Healthy larvae are pearly white. Discolored, twisted, or melted-looking larvae indicate disease

Brood Stage	Appearance	Duration
Egg	Tiny white rod, upright in cell	Days 1-3
Young larva	Small white C-shape in jelly	Days 4-6
Older larva	Large, fills cell, curled tight	Days 6-9
Capped cell (worker)	Tan/brown, slightly convex cap	Days 9-21
Capped cell (drone)	Dome-shaped, bullet-like cap	Days 9-24

Queen Cells

Queen cells are larger, peanut-shaped cells hanging vertically from the comb. Their location tells you why the bees are building them:

• Swarm cells: Found along the bottom edges of frames. The colony is preparing to swarm. You have days to act
• Supersedure cells: Found in the middle of the frame face. The colony is replacing a failing queen. Usually only 1-3 cells. Often best to let the bees handle this themselves
• Emergency cells: Built over existing worker cells (you can see the converted cell base). The colony has lost its queen suddenly

Honey and Pollen Stores

• Capped honey: White-capped cells, usually in the upper corners of brood frames and in dedicated honey supers
• Nectar: Uncapped cells with shiny liquid. Hold the frame horizontally and shake gently — if nectar drips, it is not yet ripe
• Pollen: Packed cells with colorful granules (yellow, orange, gray, even purple depending on flower source). Pollen stored near the brood is essential for larval feeding

Estimating Stores

A standard deep Langstroth frame fully capped with honey weighs about 6-7 pounds and holds roughly 5-6 pounds of honey. A colony needs 60-90 pounds of honey to survive winter in temperate climates — roughly 10-15 full deep frames.

Signs of Queenlessness

A colony without a queen will die within weeks unless the situation is corrected. Warning signs:

• No eggs or young larvae: If you find capped brood but no eggs, the queen has been absent for at least 3 days
• Increased roaring: Queenless colonies are noticeably louder and more agitated during inspections
• Laying workers: If queenless for more than 2-3 weeks, workers may begin laying unfertilized eggs. These produce only drones. Signs include multiple eggs per cell (workers cannot reach the cell bottom as precisely as a queen) and scattered drone brood in worker-sized cells
• Decreased population: Without new brood emerging, the colony shrinks visibly over 3-4 weeks
• Queen piping: A sharp, high-pitched sound made by virgin queens. If you hear piping, a new queen may be emerging — do not disturb further

Disease Indicators

Early detection of disease during inspections prevents colony loss and spread to other hives.

Brood Diseases

Disease	Visual Signs	Smell	Test
American Foulbrood (AFB)	Sunken, greasy-looking caps with holes; ropy brown larval remains	Foul, rotting smell	Matchstick test: insert into dead larva, pull out slowly — AFB stretches into a 1-inch ropy string
European Foulbrood (EFB)	Twisted, discolored larvae (yellow-brown) in uncapped cells	Sour smell	Larvae die before capping; no ropy string
Chalkbrood	Hard, white or gray-black mummified larvae, often visible at entrance	None	Shake frame — mummies rattle in cells
Sacbrood	Fluid-filled larval skins in cells, like tiny water balloons	None	Larvae can be lifted out intact in their skin

American Foulbrood

AFB is the most serious brood disease. Its spores persist for decades in contaminated equipment. In many regions, the required response is to burn the hive, bees, and all contaminated woodenware. Never move frames from a suspected AFB hive to healthy colonies. If you see the signs, isolate the hive immediately and seek experienced help.

Adult Bee Diseases and Pests

• Deformed Wing Virus: Bees with shriveled, useless wings crawling at the entrance. Transmitted by varroa mites. Indicates a serious mite infestation
• Nosema: Dysentery streaks (brown fecal stains) on the front of the hive and on frames. More common in late winter/early spring
• Small Hive Beetle: Small, dark beetles running across frames when exposed to light. Larvae tunnel through comb, causing fermentation and slime. Maintain strong colonies and reduce excess space

The Minimal-Disturbance Philosophy

Every inspection should have a purpose. Before opening a hive, articulate what you are looking for. Common inspection goals:

1. Quick check (5 minutes): Is the queen laying? Are there stores? Any obvious problems? Examine 2-3 brood frames
2. Full inspection (15-20 minutes): Assess every frame in the brood chamber. Evaluate population, brood pattern, stores, queen cells, disease
3. Targeted intervention (variable): Adding supers, removing queen cells, treating for mites, combining colonies

Time Limits

Keep full inspections under 20 minutes per hive box. After 20 minutes, bees become increasingly defensive, brood is exposed to temperature stress, and your observations become less reliable as the colony’s behavior shifts to alarm mode. If you cannot finish, close up and return another day.

Conditions for inspection:

• Temperature above 55-60°F (13-16°C)
• Calm or light wind
• Midday when foragers are out (fewer bees in the hive)
• Never inspect in rain — wet, chilled brood can die

Record Keeping

Written records transform random observations into actionable management data. At minimum, record for each hive on each inspection:

• Date and time
• Weather conditions
• Queen status: Seen? Eggs present? Queen cells?
• Brood pattern: Solid or spotty? How many frames of brood?
• Population estimate: How many frames are covered with bees?
• Stores: Frames of honey? Pollen present?
• Temperament: Calm, nervous, aggressive?
• Disease signs: Any abnormalities noted?
• Actions taken: Supers added/removed, frames rearranged, treatments applied
• Next steps: What to check or do at next inspection

A simple notebook works. Some beekeepers use index cards kept under the outer cover of each hive. The format matters less than consistency.

Numbered Hives and Frames

Number every hive and mark frames with a permanent marker (1-10, front to back). This lets you track specific frames over time — for example, noting that frame 5 in Hive 3 had three queen cells last week and checking whether they have been torn down or are still developing.

Common Mistakes

• Opening the hive “just to check” without a specific purpose — this leads to unnecessary disturbance
• Holding frames over the ground instead of over the open hive — if the queen falls off, she lands in grass and may be lost
• Forgetting to look at the bottom board — debris on the bottom board tells a story (wax cappings indicate active honey processing, mite bodies indicate infestation level)
• Inspecting in sequence without cleaning your hive tool between hives — this can transfer disease. Scrape your tool clean and flame it briefly with your smoker between hives

Seasonal Inspection Priorities

Spring: Is the queen laying well? Is the population building fast enough? Does the colony need supplemental feeding? Watch for early swarm preparations in strong colonies.

Summer: Swarm management is the top priority. Are supers filling? Does the colony need more space? Monitor for robbing behavior from other colonies during nectar dearths.

Fall: Are winter stores adequate (60-90 pounds of honey for temperate climates)? Has mite treatment been completed? Is the queen still laying well enough to produce the long-lived “winter bees” that must survive until spring?

Winter: Do not open the hive. Check entrance activity on warm days (bees should make cleansing flights above 45°F). Heft the hive from the back to estimate remaining stores — a light hive needs emergency feeding (fondant or sugar bricks placed directly on the top bars).

Summary

Hive inspections are systematic diagnostic sessions, not casual visits. Inspect every 7-10 days during swarm season, every 10-14 days otherwise, and avoid opening hives in winter. Essential tools are a smoker, hive tool, and veil. Focus on brood pattern quality, queen status, food stores, and disease signs. Keep written records for every inspection. The guiding principle is minimal disturbance: get in, gather information, take action if needed, and close up quickly. A well-inspected hive with consistent records gives you the information to prevent problems before they become emergencies.