Are Birds Cold-Blooded Or Warm-Blooded?Understanding The Birds

Are Birds Cold-Blooded or Warm-Blooded

Many birders are amazed at the birds’ capabilities in different seasons and weather. Some birds, such as the winter birds, can visit their feeders on the coldest of days.

So many people ask if the birds get cold and how they keep warm during winter. 

The birds have several excellent great adaptation capabilities that allow them to survive in the most extreme conditions. 

Birders need to understand these characteristics to provide better conditions for them. 

With such knowledge, domesticating birds will be much easier and more fun for them. They’ll be able to help their feathered friend happy by ensuring their comfort.

 The ability of the birds to operate normally during the cold season has left many wondering. Answering the question;

Are Birds Cold-Blooded or Warm-Blooded?

The birds are warm-blooded animals. They tend to have higher body temperatures because of their higher metabolism rate. 

Their metabolism rate is higher than humans. 

The exact measurement of the temperature varies according to species. However, the average bird’s body temperature is 106 degrees “40 degrees Celsius.”  

More Information On Birds

Several things influence birds’ body temperatures. The temperature can vary depending on diet, climate, and diet. 

The smaller birds are at more risk, though. They have a larger surface area, too loose temperature, but a small volume to generate heat. 

However, the smallest birds have ways to keep warm during the coldest of days efficiently. 

How Do Birds Keep Warm? 

Birds are unique creatures. They have various physical and behavioral characteristics that help them keep warm during cold weather. Highlighted are some of the adaptations. 

The Behavioral Adaptations

It’s the response that is generated according to the various environmental needs. The behavioral adaptation of birds can be grouped into two.  

Birds’ behavioral activities can be an instinctual or learned behavior. It includes things like feeding, caring for itself, or interacting with other birds or animals. 

For a human to have more fantastic and satisfying relationships with their birds, they have to understand their behaviors.  There are several birds’ behavioral characteristics.

1. Tucking Feet and Their Bills

I’m sure you have seen a bird stand on one leg or crouched on both legs. While doing these, they spread their feathers to shield the bare skin from cold. 

The birds also have a behavior of tucking in their bills in their inner shoulder. It offers some protection and gives them the chance to breathe warm air generated from their bodies. 

2. Shivering

This is a short-term heat-generating solution for the birds. Shivering raises the metabolic rate of the body. This, in turn, leads to the generation of extra heat. 

The great thing is that shivering does use lots of calories. However, it’s the best available and short-term solution that birds use to keep warm. It’s great for places with extreme weather conditions but has rich food sources. 

3. Roosting and Cuddling 

We all are familiar with cuddling. Just like humans cuddle for warmth, so do birds. The small species are known to crowd together during cold weather to keep warm. It also reduces their metabolic rate hence saving energy.

Other birds like the titmice take advantage of the tree cavities. The tree cavities help them keep warm while protecting them from predators. 

4. Fluffing 

Through fluffing, birds create air pockets that offer them additional insulation in cold temperatures. 

The birds look puffy and fat with fluffed feathers. However, they are always toasty warm at the time.

5. Sunning 

During winters, birds take advantage of the sun. It’s an effortless way of receiving heat. They tend to spread their wings with their backs turned to the sun. 

This allows the sun to reach their feathers and skins more efficiently. The more the surface area the birds are exposed to the solar light, the faster they warm up. 

The Physical Adaptations Of Birds

1. The Legs and Feet

Most birds like the geese and ducks spend a lot of time in cold water and ice during winter. Maintaining the proper heat of their legs is essential for their survival. 

The birds have a defined vascular system designed to warm them up. The veins in bird legs and feet are closely packed together. 

Therefore the birds’ blood gets warmed and cooled quickly. The legs and feet of birds are covered with scales that reduce the amount of heat lost.

2. The Birds Feathers

All the birds have this physical adaptation. The feathers do play a significant role in keeping them warm. Some even grow extra feathers to help them keep warmer. 

They offer unspeakable insulation against extreme cold weather. The birds’ feathers are coated with oil which also provides insulation against cold. 

3. Birds Have Fat Reserves

Even the smallest species of birds do build up fat reverses. The fat reserves help them keep warm and maintain average body temperatures. In addition to insulation, the reserves provide extra energy that birds use to generate heat.  

During late summer, birds tend to pack on body weight. It’s an instinctual thing. The birds are always anticipating the long coming winter. However, the birds will need to have abundant food. 

If you’re a birder, you must give it healthy feeds that will help them develop fat reserves. Offer them the feeds immediately before winter. 

How To Help Birds Keep warm

There are ways in which birders can help the birds keep warm during winter. The birds have ways in which they can naturally protect themselves from the cold. 

However, the weather might become so extreme at times. The birds will need help from humans. 

Don’t worry because keeping birds warm is not that tricky. Here are some of the things that humans can do to keep birds warm.  

1. Offer High-Energy Foods

The one primary reason why most birds don’t survive through winter is the lack of high-energy feeds. The birds require a lot of energy during metabolism. 

Without proper feeds, it’ll be hard for them to perform the activity daily. They lose it when they grow weak. 

Therefore you can offer high-energy feeds like peanut butter, meat scraps, and suet. This feeds do provide fats to the birds too.

2. Furnish and redesign your birdhouses 

The houses should be able to keep the birds warm through the winter season. There are many ways this can be achieved. 

Use the most available resources like dried grass or dry wood shavings.  Layer the bottom of the house to about three to four inches of the dry grass of wood shavings. 

However, wood shavings are the best option and tend to work exceptionally in heat-retaining. However, desist from using sawdust. 

It does absorb moisture, and after some time, it won’t offer the needed protection. Plus, it may lead to the spread of microbial infections. 

3. Set up the birdbath heater wisely

The birdbath can be kept open by the water heater during the cold season. This is good and bad at the same time. 

It’s because the birds will need water even in the cold season. However, if there’s snow, the birds will use snow for water. 

The bad part is that there is a possibility of birds swimming in the water. Before drying up, the water will freeze on the birds’ feathers. 

This can prove to be quite adverse to the birds. It might lead to more complications. It’s advisable to put several objects like rocks in the birdbath. 

This ensures there’s no enough space for the birds to swim. It should only allow the birds to drink. 

4. Construct a Windbreak

This is just another brilliant and easy to actualize the idea. Some snows are dry and characterized by winds. The winds can be extreme to the extent of burying the feeders. 

To keep the feeders and birds protected from the robust wind construction of a windbreak is the wisest thing to do. 

You can use any materials. However, the material used should be able to match the strength of the wind. Plywood is the most preferred material. It should be well fitted to avoid being blown away. It will help reduce the wind drastically. 

5. Put Seeds in Sheltered Places

Not all the birds will pick up the idea of using the feeders. Some species prefer eating from the ground or in the shrubs. 

Ensure to scatter the seeds in the thickets and other secure places. The sources can be peanut or sunflower bits. You can spread them under your deck too. 

They’ll be more comfortable feeding from such areas. The species that appreciate this include sparrows. 


The birds are warm-blooded animals. They use their various adaptations to survive during the cold season. So don’t be surprised at how they manage to maintain the warmth during extreme seasons.   

The winter periods are always tricky for almost all animals. Even warm-blooded humans are forced to stay indoors and wear fluffily. The birds are no exception. They can also perfectly survive without our help. 

However, we should come through for them. The weather may become so extreme that access to feeds becomes so limited. Research suggests that birds with access to feeders have a higher survival rate than those that don’t.