Getting Ahead of Summer Before It Arrives
The Growing Flock — Part 7 of 8
Your birds are around fourteen weeks old now — nearly full-sized, eating well, settled into the coop. And in most of Australia we are only weeks away from the first genuinely hot day of the season.
That timing is the whole point. Summer preparation is work you do in November, not January. Once 38°C is on tomorrow's forecast, your options shrink to buckets of water and worry.
Why Heat Is Harder on Chickens Than Cold
Most new keepers worry about winter. In practice a healthy feathered bird handles cold remarkably well — down jacket, built in, worn all day.
Heat is the opposite problem. Chickens have no sweat glands, which leaves them two ways to shed heat.
The first is panting — moving air across moist surfaces in the airway so heat leaves through evaporation. It works, but costs energy and water, and upsets their blood chemistry if it runs for hours.
The second is radiating through bare skin: comb, wattles, earlobes and the unfeathered parts of the legs, where blood runs close to the surface and sheds warmth into the air.
Comb size and feathering are not just looks
Once you understand that second mechanism, breed differences make sense. A large upright single comb has far more surface area to radiate from, which is why Leghorns and similar Mediterranean breeds cope so well in the heat.
Small combs — pea, rose, walnut — are a cold-climate adaptation, since a big comb is a frostbite risk. Wyandottes and Brahmas are carrying winter equipment through an Australian summer.
Add heavy, dense feathering and it compounds. Orpingtons, Cochins and anything with foot feathering feel a hot day far more than a Leghorn will. That does not mean you cannot keep them — it means they need more shade, more water and closer watching than the flock average.
Recognising Heat Stress — In Order
Heat stress arrives in a predictable sequence, and the early signs are your window to act.
- Wings held away from the body, opening up the thinly feathered area underneath to let heat escape. First sign, and easy to miss.
- Panting with an open beak, often with the throat fluttering. The bird is now actively working to cool itself.
- Pale comb and wattles. Colour draining from normally red tissue is a circulation sign, and means she is struggling.
- Lethargy and standing apart, wings out, eyes half closed, removed from the flock.
- Sitting down, flat, unresponsive. This is not a warning. This is an emergency.
That last point deserves repeating. By the time a bird is down and not reacting to you, heat stress has already done damage. Move her somewhere cool and shaded, offer water, wet the legs and feet, and ring your vet.
Water Is the Biggest Lever You Have
If you change one thing before summer, change your water setup. A chicken's intake roughly doubles on a hot day, because much of it goes into evaporative cooling through panting. Run short of water and the bird loses her main cooling system.
Put every drinker in the shade
Water in full sun gets genuinely warm, and birds drink noticeably less of it. You can have a full drinker and a dehydrated flock at the same time. Shade every one — under the coop, under a tree, under a run cover.
Have more drinkers than you think you need
Flocks have a pecking order, and on a hot day the bottom birds get pushed off water when they need it most. Two or three drinking points in separate corners means the bullied pullet still gets a turn — a dominant hen can guard a cluster, but not three spread across the run. A range of drinkers and waterers makes adding stations easy.
Cool water, not iced
Cool water is more palatable and encourages drinking. An ice block dropped in is fine, but very cold water in quantity is not ideal for a stressed bird. Aim for refreshing rather than freezing, and check levels twice on hot days.
Shade That Works, and Shade That Bakes
Not all shade is equal, and some of it makes things worse.
What works is shade with airflow above and around it. A tree canopy is close to ideal — it blocks the sun, the leaves cool the air as they transpire, and breeze moves through freely. Shadecloth strung well above the run works for the same reason: hot air underneath has somewhere to go. Aim for 70 to 90 per cent cloth.
What bakes is anything that traps heat. A sheet of tin laid flat over the run with no gap beneath becomes a radiant heater by mid-afternoon. A plastic coop in full sun is the same story — the walls absorb heat and re-radiate it inward, leaving the birds inside hotter than birds standing in the open with a breeze.
Walk your run at 3pm on a warm November day and see where the shade actually falls. Summer sun sits higher and further south than the winter sun you have been watching for months, so shade you relied on in July may land somewhere quite different in January.
Airflow: Why a Perfect Winter Coop Can Be Lethal in February
Most coops are built with winter in mind — snug, draught-free, sealed against the southerly. That same coop in February becomes a hot box: with no air moving through, the heat the birds generate has nowhere to go and the inside climbs well above the outside air.
The fix is cross-ventilation: openings on opposite walls, high above roosting height, so air moves through without blowing on the birds. Hinged vents, removable panels or mesh in place of a wall section all work. High matters because hot air rises — vents near the roofline pull the hottest air straight out.
Electrolytes, and When They Help
Heavy panting costs birds more than water. It shifts their blood chemistry and depletes salts, which is why electrolytes earn a place in a summer kit.
They help most during and just after a real heat event, or for a bird recovering — not as something to run all summer. Offer plain water alongside so birds that dislike the treated water still drink, and follow the label for mixing rates.
Keep a pack of poultry health supplements on the shelf before you need it, rather than hunting for some on a 40°C Saturday. For a bird already down, electrolytes are not a treatment — that is a vet call.
Wet the Ground, Not the Birds
Hosing a chicken down seems the obvious response, but wet feathers pressed against the skin trap warmth and interfere with the bird's own cooling — and soaking a panicking bird adds stress at the wrong moment.
Cooling the environment works far better. Hose a patch of shaded earth morning and afternoon. Damp soil under a tree stays several degrees cooler than dry ground, and birds will dig a hollow and press their bare belly and legs against it — their own cooling strategy, and an efficient one.
Cool water on the legs and feet of a heat-affected bird is different — that is targeted cooling of the areas built to shed heat, and it helps. Dunking the whole bird does not.
Your November Checklist
- Walk the run at 3pm and map where shade will fall in summer.
- Hang shadecloth over exposed areas, with an air gap above it.
- Move every drinker into permanent shade, and add a second and third in separate parts of the run.
- Open high vents on opposite coop walls for cross-ventilation.
- Check no metal or plastic surface sits in direct sun above the birds.
- Choose a shaded patch of bare earth to wet down each hot morning.
- Put electrolytes in the cupboard now.
- Learn the five signs above and share them with whoever minds the birds when you are away.
Get this done in the next few weeks and the first hot spell becomes a day you manage rather than survive. Your pullets will be coming into lay right around the time it hits, and a comfortable flock stays on track far better than one struggling through January.
What's Next?
In the final part of the series we reach the moment it has all been building towards. "Point of Lay: Getting Ready for the First Egg" covers the signs your pullets are close, the nest box setup that gets them laying where you want, and what to expect from those first small eggs.