“The weather is getting colder, does my bird need a heater?”
As summer comes to an end and the evenings start getting cooler, it's natural to wonder whether your bird needs some extra warmth.
The good news is that most indoor pet birds don't automatically need a heater just because autumn has arrived. What matters most is providing a stable, comfortable environment, avoiding draughts and sudden temperature changes, and knowing the signs that your individual bird may be struggling with the cold.
Different species have different requirements, so there's no single temperature that is perfect for every pet bird.
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Do pet birds feel the cold?
Yes. Birds are warm-blooded animals and have a natural ability to regulate their body temperature.
Their feathers play an important role in keeping them warm. When a bird fluffs its feathers, it traps a layer of air around its body, helping to reduce heat loss. You may therefore notice your bird fluffing up a little more as the weather gets cooler.
That's not necessarily a problem.
The important thing is whether your bird is behaving normally otherwise. The RSPCA notes that birds may rest more, fluff their feathers and seek warmer areas during colder weather. However, excessive fluffing combined with lethargy or other changes can indicate that a bird is struggling.
What temperature is too cold for a bird?
This is where things can get a little confusing. There's no single “safe temperature” for every pet bird because species, age, health, acclimatisation and housing all make a difference.
A bird that is accustomed to a stable indoor environment may respond differently to cold temperatures than a bird housed outdoors.
The RSPCA advises that pet birds can be at risk when temperatures become very cold and recommends particular care for birds kept in outdoor aviaries. For tropical and subtropical species kept in aviaries, it gives a temperature range of 12–26°C for their indoor area.
So rather than thinking: “My thermometer says X°C, therefore my bird is too cold.”
Think about the whole environment.
Is your bird exposed to a draught?
Has the temperature suddenly dropped?
Are they behaving differently?
Are they eating and drinking normally?
These clues can be more useful than one number on a thermometer.
How can I tell if my bird is too cold?
A little extra fluffing on a chilly morning isn't necessarily something to worry about.
However, watch for persistent changes, such as:
- Staying very fluffed up for long periods
- Tucking their beak into their chest for prolonged periods
- Becoming unusually quiet or sleepy
- Sitting in one place for much of the day
- Seeking heat constantly
- Becoming less active
- Eating differently
- Appearing weak or lethargic
If your bird is showing these signs, don't automatically assume it's simply cold.
Illness can cause similar symptoms, and birds are particularly good at hiding when they're unwell.
If you're concerned, speak to your vet.
Where should I put my bird's cage in autumn?
Where you position the cage can make a big difference to your bird's comfort.
A good location should be:
- Away from draughts
- Away from open windows
- Away from exterior doors that are frequently opened
- Away from radiators
- Away from fires and stoves
- Away from kitchens and cooking fumes
- Somewhere your bird feels secure
- Away from sudden changes in temperature
The RSPCA specifically advises against placing bird cages near radiators, fires, stoves or draughts.
A useful rule
Don't put your bird where you wouldn't be comfortable sitting for several hours yourself.
A cosy, stable part of the room is usually preferable to positioning the cage directly beside a heat source.
Why shouldn't I put the cage next to the radiator?
It might seem logical, but this isn't recommended.
Radiators create direct, concentrated heat, while the surrounding room may be considerably cooler. Your bird can therefore experience a much bigger temperature variation than you realise.
There is also the risk of your bird becoming overheated if they can't move far enough away from the heat source.
Instead...
Heat the room rather than directly heating the bird.
If your home needs heating, aim for a comfortable and relatively stable room temperature rather than placing a heater immediately beside the cage.
What about windows and draughts?
A sunny windowsill might seem like the perfect place for a bird cage, but it isn't always ideal.
Windows can create:
- Cold draughts
- Sudden temperature changes
- Direct sunlight and overheating
- Disturbance from activity outside
Likewise, placing a cage directly beside a frequently opened door can expose your bird to repeated blasts of cold air.
Your bird doesn't necessarily need to be hidden away from windows but avoid placing the cage where cold air is regularly blowing directly onto them.
Should I cover my bird's cage at night?
A cage cover can be useful for some birds, particularly for helping create a darker, quieter sleeping environment.
The RSPCA also recommends using a cage cover as one way of helping retain heat during colder weather.
However, a cover shouldn't be used to compensate for an unsuitable room temperature.
Choose a breathable, bird-safe cover and make sure your bird still has adequate ventilation.
And remember: birds have individual preferences. Some settle beautifully with a cover, while others become stressed by it.
What about birds kept in an outdoor aviary?
Outdoor birds need considerably more planning as autumn and winter approach.
An outdoor aviary should provide access to a secure, dry, protected indoor area where birds can escape cold weather and harsh conditions.
The RSPCA recommends that aviaries have an indoor area large enough for the birds to use during harsh weather and says this area should be draught-proof, insulated and safely heated where appropriate.
This is particularly important for species that originate from warmer climates.
Before the weather gets colder, check:
- Is the aviary watertight?
- Is the indoor section properly protected from draughts?
- Can your birds get away from wind and rain?
- Is there adequate ventilation without creating draughts?
- Is the heating system safe and working?
- Can drinking water remain available?
- Is there enough space for all the birds to shelter comfortably?
Don't wait until the first really cold night to discover that something needs fixing.
Should I change my bird's diet in autumn?
Your bird shouldn't suddenly need a completely different diet simply because the season has changed.
However, birds may use more energy to maintain body temperature during colder weather, and the RSPCA notes that they may have an increased appetite during winter.
The most important thing is to continue providing a balanced, species-appropriate diet and constant access to fresh drinking water.
Avoid responding to cold weather by simply giving your bird lots of high-fat treats.
If you're unsure whether your bird's diet is appropriate for their species, it's better to review their overall diet rather than making seasonal changes based on one ingredient.
Common mistakes to avoid
❌ Putting the cage directly beside a radiator
Your bird needs a stable environment, not a blast of direct heat.
❌ Moving the cage every time the temperature changes
Constantly moving your bird can be stressful. Find a suitable position and keep their environment as stable as possible.
❌ Assuming a fluffed-up bird is simply cold
Fluffing can be normal, but persistent fluffing can also be a sign of illness.
❌ Using any household heater without checking its suitability
Birds are particularly sensitive to airborne pollutants. Choose heating equipment carefully and keep your bird away from fumes.
❌ Closing everything up to eliminate draughts
Your bird still needs appropriate ventilation. Draught-free doesn't mean airtight.
What we recommend at Smith's Pets
Our biggest piece of advice as autumn arrives is don't panic about the temperature every time the weather changes.
For an indoor bird, a comfortable, stable room away from draughts and direct heat sources is usually a much better approach than trying to make their cage as warm as possible.
Every bird is different, though.
Species, age, health, housing and whether your bird is accustomed to indoor or outdoor conditions can all make a difference.
If you're unsure about your bird's individual needs, our team can help you think through their housing, cage position, equipment and general care.
And if your concern is that your bird may actually be unwell, a vet is the right person to speak to.
Should I leave the heating on overnight for my bird?
There's no universal answer because it depends on the species, room temperature and individual bird. Rather than leaving a heater running simply because it's autumn, aim to maintain a suitable, stable environment and discuss specific heating requirements with your vet if you're concerned.
Can birds get too hot as well as too cold?
Absolutely. This is one reason why placing a cage directly beside a radiator or heater isn't recommended. Your bird needs to be able to remain comfortable without being exposed to excessive direct heat.
Can I use a hot water bottle to warm my bird?
We wouldn't recommend improvising with household heat sources. A hot water bottle can become too hot and may create a burn risk, while a bird could also become dependent on a local heat source. If your bird genuinely needs additional warmth, ask your vet about the safest approach.
Does a bird's species make a difference?
Yes. Different species have evolved in very different environments, so their environmental requirements aren't identical. A tropical or subtropical species may have different requirements from a species accustomed to cooler conditions.
Should I buy a cage thermometer?
A thermometer can be useful for understanding the environment your bird is living in, particularly if you are concerned about temperature fluctuations or keep birds outdoors. However, don't use a thermometer as the only measure of your bird's wellbeing. Their behaviour and overall health matter too.
