by Taetske | 8:08 pm
(Last Updated On: July 24, 2021)


Genetics and Climate. Is there a connection?


Climate Change is altering the behavior of birds, and we can observe even genetic changes. An article recently published in my Spanish newspaper, Sur, really made me think.


Migratory birds

Migratory birds image blende 12


No more seasons

I have been living in the south of Spain since 1976 and I have observed the changes in the seasons. There is no real spring or autumn anymore. It feels as if one goes straight from summer into the winter. Seasonal clothes hang in the wardrobe year after year without being used

The entire country is suffering from a severe drought and each year there is less water in the reservoirs. Coming back to the article, some disturbing news was shared.

Because of Global Warming, birds are changing their habits. Some species do not emigrate anymore, or if they do, they don’t go so far south anymore. What is also observed is that we now see new bird species from Africa in the south.

The University of Florida also observed genetic changes taking place. The wings and beaks have become shorter. Birds are adapting to their new environmental conditions.



Barn-Swallow image Jochen Schaft


Changes in behavior

The swallow is a bird that comes and goes. They emigrate to warmer regions, but they now are returning 1 month earlier than the last century. SEO/BirdLife has studied in-depth the effect Global Warming has on birds. Some species have it more difficult, while others are quite happy with this change.

Because of Climate Change, the swallow is comfortable to spend most of the winter here. As the daytime temperatures are close to 20C, it is no surprise.

There are more Herons too. They live and reproduce close by reservoirs, lakes, and rivers.  There they have found something new to eat, the American crab, that loves to live in those humid areas.

As I said before we are lacking rainfall in a big part of the country so I personally wonder how the situation might be, let’s say in 10 to 20 years.


Heron with catch

Heron with catch image Mabel Amber


To find food is most important

Another thing that can change the behavior pattern of birds is obviously how easily they can find a food source. Humans are to be blamed for using pesticides, which in turn kill insects. There is an overall decline in Insects, a food source for birds.

Mr. Phillip A. Stevens, the investigator of the University of Durham in England and head of a scientific group, has come to the following conclusion. He worked with data from 1980 to 2010.

Working with data from 1980 to 2010, he studied 340 bird species in the US, and 145 in Europe. Of the 145 species in Europe, 95% live and reproduce here in Spain. He found that of the species living in Spain, 59 species were worse off and 37 species were better off. He noticed a big decline in biodiversity, and that is alarming.


Stork parents on their nest

Stork parents on their nest image Michael Schwarzenberger


The storks in Spain

In Castilla, the arrival of the storks was a special event. These birds would fly over the Gibraltar Strait into the Sahara and feed on grasshoppers and other insects.  They would come back to Spain to have their babies. Their migration was not driven because of cold temperatures. Storks have a lot of feathers and are insulated from cold. The motive of their migration was food.

They have now changed this behavior. The culprit being the many wastes dumps spread over the Spanish territory. By the way, those waste sumps are one of the problems we have here. It forms a sore in the environment.

Storks can stay here now the entire year-round, and I think their food source has not improved.

Humans, as well as the Flora and Fauna of our Planet, all suffer the effects of Climate Change. What would take decades in old times now seems to only need a few years to manifest. Behavioral and even genetic changes now can happen in one generation.

This YouTube video explains the problem very well



This is a very serious book you should not miss

Climate Change affects all living things, from humans to the smallest animals. This change used to happen over a longer period, sometimes thousands of years. Now it can happen within one generation.

In this book, you will read how climate change relates to birds. Compared with any other class of animals, birds provide more long-term data. Some data of over 100 years. The research record exceeds what is available in all other organisms combined.

A must-have for those who want to know why and how climate change is changing our world.




The swallow, the heron, and the stork are just a few examples of behavior change because of Climate Change, it makes one think, don’t you agree?

Recently, I came across this video. I hope you will take the time to look at it. It tells you about our sins to the environment and warns there is not much time left.



Before you leave, you might want to visit Recommendations. It is a special page with a collection of things I like. I hope you will find something of your interest.


Source; Newspaper Sur, an article from Fernando Minana.

Photo Source: Pixabay


Birds eat insects and their food source is in sharp decline. The disappearance of some species will leave a gap in the food chain. This again will collaps the total setup. Humanity is just another species and we will also suffer.  Perhaps you would like to read my post on insects.

The Worrying Decline of the Insects.



This is actually a pretty interesting viewpoint that I have never even considered before!

Truthfully, I wasn’t aware that birds could change genetically in such short periods of time, so this was certainly an informative read for me.

The connection between behavior and genetics is obvious when you lay it down, but I honestly wouldn’t have assumed it if I didn’t read it for myself.


Jan 01.2018 | 08:29 pm


    Good Morning Vlad,

    Thank you for visiting my website. I was also surprised when I found out about this rapid change in genetics. One normally would think it takes like thousands of years for this to happen but there you see it goes much faster. I can only shake my head and wonder about the ignorance when people deny the effects of Global warming. I just ask myself if people will also adapt so rapidly as the animal kingdom seems to do. I have lived in the south of Spain for more than 30 years and I see a big change in climate here. There are no 4 seasons anymore. It is now winter but it seems like spring with 20C during day time.

    Regards, Taetske

    Jan 02.2018 | 07:38 am


Seriously! this really made me think. Right now I’m heavily involved in the science department at the college I attend, but I was looking for an article on current events in geography, somehow I found this and I have to say that we really are concerned (my classmate and I) about the serious impact that climate change and environmental stress is putting on genetics! Thank you for this post.

Apr 02.2018 | 01:32 am


    Good Morning,

    Thank you for visiting my website. There are too many bad things going on and we will all suffer the consequences. I understand you are still young and that is good as you seem to see the seriousnes of this situation. The younger generation will have to clean up the mess we are leaving behind. I write about it and hope it will reach a lot of people.

    Regards, Taetske

    Apr 02.2018 | 06:26 am


What you shared here is truly alarming! Human has generated too much unnecessary waste and contributed to the global warming. The behavioural changes in the animal is a warning sign for us to mend our ways, but yet nothing much has since been done. 

Thank you our for spending your time writing this post to raise awareness on what is to come. We need more of this to remind us to always be mindful of our duty to the environment. 

Dec 30.2018 | 09:34 am


    Good afternoon Grace,

    Thank you for your visit and leaving a comment. I hope you downloaded your free PDF?

    It is very sad that these type of things are happening at such an alarming speed and that is mainly our fault. Each person in his or her daily life can make small changes and that will make an impact in our world. 

    Our environment is so important because it is where we live. Hopefully there is still a beautiful planet left for future generations.

    Regards, Taetske

    Dec 30.2018 | 02:12 pm


wow! just an eye opener!

I too have noticed that the traditional 4 seasons have also become more 2 longer seasons of summer and winter.

evolution is a slow process and I believe we may have not noticed it but future generations will look back and say ours was the one that evolved to deal with intense heat and extreme cold!

Dec 30.2018 | 09:36 am


    Good Morning Tarun,

    Thank you for visiting my website and leaving a comment. I hope you have downloaded your free PDF?

    At this moment I am experiencing another mild winter here in the south of Spain with temperatures from 15 to 20C. I do hope that humans will wake up to the threat of Global Warming as big pieces of land will disappear and that is only one of the many changes we will suffer.

    Regards, Taetske

    Dec 31.2018 | 08:21 am



there is an article from about climate changes genes.It was posted by BEVERLY JAMES-FLORIDA

It shows Global climate change has already impacted every aspect of life on Earth, from genes to entire ecosystems, according to a new study in Science. And this was back in 2016! 

so you can only imagine how much more has happened in the 2 years since thanks to global warming!

Dec 30.2018 | 10:51 am


    Good Morning Tarun,

    Nice to see you again, Thank you for telling me about I had a look and they are good, I will sign up for their newsletter. It is always good to have a new source of information. There are so many things happening in our world that it is not easy to keep up with it but I am doing my best.

    Regards, Taetske

    Jan 01.2019 | 07:52 am


Very nice content you have in this post. This is an alarming issue raised which requires total attention from us all. Everyone has in one way or the other contributed to the global warming which has caused genetic reactions and changes from the animals used as examples here. I must reiterate that, this issue demands high level of attention because I think this might just be a form of red light to us all to amend. Though if you didn’t talk about this in your post, I wouldn’t have been more grinded in this knowledge, thanks

Apr 26.2019 | 06:59 pm


    Good Morning Ro,

    Nice to see you again. Thank you for your comment.

    I started with my 2 websites in January of 2017. Since then I have come across many unusual, worrying, and interesting things. A lot of them, as you call them, are red lights. Our world is full of red lights. Just imagine a world map with these lights and connect them, the whole world would be red. 

    We are the creators of this situation. I hope there will be a collective wake up before it is too late.

    Regards, Taetske

    Apr 27.2019 | 06:54 am


You are practically right. Just a few weeks ago, I was talking with a friend of mine about how some natural experience we use to have then as kids or when we were younger are no more seen now or in best case, an insignificant amount of it is seen in this present day. Some animals I fear won’t be in existence no more in few years to come. 

Apr 26.2019 | 07:00 pm


    Good Morning Owillz,

    I also remember when I was a kid in Holland more than 60 years ago our garden was full of life. Now I live on an organic farm in the south of Spain and am blessed with nature which is alive. As my neighbor with his avocado farm is also organic now this spot is like a safe haven for birds, insects, and small mammals.

    But I do notice a difference compared to 30 years ago. In those years a fox would be dancing in the field next to my property. Because of construction in the area over the years, the fox had to move up to the mountains.

    Things change over time and not always for the better.

    Regards, Taetske

    Apr 27.2019 | 07:04 am

Nate MC

This is actually concerning. It seems like it’s happening relatively quickly too. I assume that if birds’ are experiencing genetic changes due to climate change, then eventually humans will, or it’s already happening.

Hopefully more solutions and action is taken to tackle climate change. I don’t think I’ll be around if major positive changes finally do happen. 

Apr 26.2019 | 07:24 pm


    Good Morning Nate,

    Nice to see you. Thank you for your comment.

    When you look at the human race of 100 or 50 years ago and compare to what we look nowadays I think one can see a change. Remember the film of the little robot WALL-E? that is a good example of what might happen to us. It is not a pretty picture.

    Regards, Taetske

    Apr 27.2019 | 07:09 am


My kids will probably never know what Spring feels like. I barely know because I live in Florida. Yes, our winters aren’t as cold, but they are getting shorter and we barely have what’s considered our Spring weather before it’s scorching hot over 90 degrees again. It’s either too hot or too cold. Sad to hear that birds in Spain aren’t behaving like they used to. Global warming is real and we all feel it. 

Apr 26.2019 | 07:40 pm


    Good Morning Nel,

    Thank you for stopping by and leaving a comment. I hope you downloaded your free PDF?

    Spain is also getting hotter. These last winters were around 20C and in summertime, it gets to 38C where I live. Inland there can be real heatwaves with 45C and people die from it. Then there is also a lack of rain. It is predicted that Spain will turn into a desert. To think it is all our own fault and still, we do not stop with our stupid and harmful actions.

    Regards, Taetske

    Apr 27.2019 | 07:14 am


WOW, Great scientific article and also explain excellently. I really appreciate your article. Before reading your article I don’t know that birds could change genetically in such short periods of time. Really,  I am surprised out about this fast change in genetics.

Thank you so much for sharing an informative article.

Apr 26.2019 | 08:25 pm


    Good Morning Mehedi,

    Thank you for stopping by and leaving a comment. I hope you downloaded your free PDF?

    Things are changing very fast in our modern world. Things that took thousands or even much longer to be created we change in a couple of generations. 

    I find it very strange and sad that the human race as a whole does not take care of the environment as that after all is our habitat, ours and of future generations. Our actions have consequences and often you cannot repair the damage anymore.

    Regards, Taetske

    Apr 27.2019 | 07:20 am


Hello there! Thank you very much for writing this article on Genetics and Climate. What you shared here is truly alarming! Humanity has generated too much unnecessary waste and contributed to the global warming. The behavioural changes in the birds is a warning sign for us to mend our ways, but yet nothing much has since been done. Thank you for opening our eyes, I’ll share this article with friends. 

Oct 15.2020 | 06:29 am


    Good afternoon Sophie,

    Thank you for stopping by and for your comment. Do not forget to download your free PDF. Tulip widget.

    There are many warning signs nature sends us, but we are not listening and that is very sad. Older people are normally set in their ways, so the hope is that the younger generations will see the danger of this reckless behavior. There is still time, but not too much, the clock is ticking.

    Regards, Taetske

    Oct 15.2020 | 02:20 pm

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