Wednesday, December 1, 2021

Climate Change and its Effect on Birds


The Amazon rainforest is home to over 1,300 species of birds. These birds on a daily basis do not see many humans. This does not mean that humans do not have a physiological effect on these birds though. Through human-induced climate change, these birds have changed their body size and their wing length. Scientists from Louisiana State University have been conducting studies on a variety of bird species that inhabit the Amazon and have documented these changes.

            

Over the last four decades, studies have shown that the number of resident birds, or birds that live in the area, have declined. Not only has the number of birds reduced, but the birds that live there have gone through physical changes. These changes have a consistency for extremely hot and dry conditions throughout the year. These birds have changed their bodies to become smaller, but for the wings to be longer. With this it could pose new physiological or nutritional problems for the birds. The study for this has only been done on non-migratory birds’ to eliminate other factors that may influence the changes. The data has shown that almost all the non-migratory birds have lost about 2% of their body weight every decade, or every ten years. The data was also not collected in one specific region of the Amazon, but instead throughout the whole of the rainforest. 

            

Throughout the world, animals are undergoing physical changes in response to climate changes. With these changes can come a variety of challenges that may affect the animals ability for survival and reproduction. Many tend to overlook the effect that climate change has on animals' bodies physically that may become problematic for the animals later in life or for the species further down the road. 

 

Sara Dunn (8)

https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=303979&org=NSF from=news

 

9 comments:

  1. Hi Sara, animal's response to environmental changes can be subtle or dramatic, and I think, although this is sad, it is very interesting. Some species can undergo epigenetic modifications that changes how they are to better help with survival. I think, us humans have a great responsibility to protect nature, the same thing that we have destroyed over the years.
    Kristina Baldeo

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  2. Great post. I had no idea climate change is causing birds to have physical changes to their body. Hopefully sometime soon there is a big step in what's being done about climate change as many plant and animal species are already being effected.

    - Zach Conant

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    1. Hopefully the change happens sooner rather than later. I don't think people realize the amount of change that climate change has brought to both plants and animals.

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  3. It's truly sad to think that Amazon bird populations are decreasing in size over the years due to climate change. When it comes to natural selection sometimes people forget the large cost of life that is lost when specific genes are selected for in a changing environment. While allele frequencies in the bird population may change as evolution occurs and the population persists, a large number of birds deemed "unfit" will inevitably perish within those populations...
    - Declan Downing

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    1. It is sad to think about. Many of these birds probably lost important traits due to climate change that will ultimately end up hurting the bird more.

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  4. Wow! This is such an interesting read, but it's very scary to see the physical effects of climate change like this happen in our lifetime. Do you know why these specific changes in birds are being observed? I wonder why hot and dry climates cause birds to steadily lose body size every year, while wing size increases.

    -Emma Alderman-Shapiro

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  5. Great post! I knew climate change was a problem everywhere, but I didn't know that animals were physically changing and adapting to the climate change. What's worse is that it may be harming them and it can possibly lead to more problems in the future. Hopefully we don't get to that but it's hard to say if nothing or at least more about climate change is being done now to help

    - Selena Yim

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