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Climate, Birds, and Insects: Out of Balance




Climate change significantly impacts insect populations, which, in turn, profoundly affects migratory bird populations in the United States and Canada.


A Wren on a branch holding an insect placing focus on the importance of insects and birds in our ecosystems.
A Wren perched on a branch holding an insect. Insects play a vital role in food webs. Changes in their populations can have cascading effects throughout the ecosystem. For example, a decline in insect populations can reduce food availability not just for birds but also for other wildlife, thereby disrupting the entire ecological balance.


In recent years, Science Magazine published a report on the status of bird species populations and diversity.  The shocking report, which was published in summary by the New York Times, Cornell University Laboratory Of Ornithology and many other organizations, provides scientific data proving the disappearance of populations of birds in North America by comparing radar data from 2017 with that of 1970 showing the biomass of birds or insects in the atmosphere throughout the period. 


The total population of birds in North America has decreased by 2.9 billion (29%) in just 50 years.

Climate, Birds, and Insects: Out of Balance.


A recent study showed an 83% decrease in insects in summer months using similar weather radar data analytics. One million species of plants, insects, birds, mammals, and amphibians are in imminent danger of extinction. 



Climate change significantly impacts insect populations, which, in turn, profoundly affects migratory bird populations in the United States and Canada.



As temperatures rise and weather patterns shift, various factors influence insect abundance, distribution, and lifecycle synchronization with migratory birds.



1. Temperature and Phenology:

Warmer temperatures can lead to earlier insect emergence and extended breeding seasons. This change may misalign the timing of insect availability with migratory birds' arrival in their breeding grounds. If birds arrive too late to take advantage of peak insect populations, their reproductive success may decline, leading to lower survival rates for their offspring.



2. Habitat Alteration:

Climate change can alter habitats, affecting the diversity and abundance of insects. For instance, changes in land use, increased frequency of extreme weather events, and shifts in vegetation types can disrupt local ecosystems. As birds rely on specific insects for food during critical periods of their life cycle, any decline in insect diversity could compromise their foraging success and overall health.



3. Invasive Species:

Climate change may facilitate the spread of invasive insect species, which can outcompete native insects for resources. These shifts in insect community dynamics can negatively impact native birds that depend on specific insects, further stressing migratory bird populations.



4. Food Web Dynamics:

Insects play a vital role in food webs. Changes in their populations can have cascading effects throughout the ecosystem. For example, a decline in insect populations can reduce food availability not just for birds but also for other wildlife, thereby disrupting the entire ecological balance.



5. Migration Patterns:

As insects respond to climate changes by altering their ranges, migratory birds may also adjust their migration routes and timings. This adaptation might lead to increased competition for resources in new areas, impacting population dynamics and potentially leading to increased mortality.



In summary, the interconnectedness of climate change, insect populations, and migratory birds underscores the importance of monitoring and mitigating climate impacts.


As a licensed Avian Rehabilitator, I emphasize the necessity for conservation efforts that address these challenges to support the health of migratory bird populations across the United States. - Julie Rabalais, Founder/Director, For The Birds of Acadiana


HOW TO HELP


Here are some simple actions individuals can take to help mitigate the impacts of climate change on insect populations and, consequently, migratory bird populations:



1. Native Plant Gardening:

Native plants provide vital food sources for insects, which in turn support birds. The more diverse the plant life, the richer the habitat will be for both insects and birds.
Native plants provide vital food sources for insects, which in turn support birds. The more diverse the plant life, the richer the habitat will be for both insects and birds.

Plant native flowers, shrubs, and trees in your garden. Native plants provide vital food sources for insects, which in turn support birds. The more diverse the plant life, the richer the habitat will be for both insects and birds.



2. Reduce Pesticide Use:

Limit or eliminate the use of pesticides and herbicides in your yard. These chemicals can harm beneficial insect populations that are essential for the ecosystem and food sources for birds.



3. Create Habitat Corridors:

Encourage your community to establish green spaces and habitat corridors that connect various natural areas. This can help insects and birds migrate and thrive by providing safe passage and access to resources.



4. Support Local Conservation Efforts:

Get involved with or donate to local wildlife conservation organizations, such as those focused on avian rehabilitation, like For The Birds of Acadiana. Your support can help fund programs aimed at protecting birds and their habitats. https://tinyurl.com/DonateForTheBirdsofAcadiana

Climate change significantly impacts insect populations, which, in turn, profoundly affects migratory bird populations in the United States and Canada.
Support policies that address climate change and protect wildlife habitats. Contact your local representatives to express your concerns and advocate for environmentally-friendly legislation.


5. Educate Others:

Share knowledge about the importance of insects and birds in our ecosystems with your friends and family. Awareness can lead to more people taking actions to protect these species.



6. Sustainable Practices:

Practice sustainable living by reducing energy consumption, recycling, and supporting renewable energy initiatives. Every small effort contributes to the larger fight against climate change.



7. Participate in Citizen Science:

Join citizen science projects that monitor bird and insect populations. Your observations can provide valuable data to researchers and conservationists.



8. Advocate for Policy Change:

Support policies that address climate change and protect wildlife habitats. Contact your local representatives to express your concerns and advocate for environmentally-friendly legislation.



By taking these simple actions, we can contribute to a healthier ecosystem that supports both insect and migratory bird populations, ultimately fostering biodiversity and resilience in the face of climate change.



We have provided the following helpful resources:




Julie S. Rabalais

Founder / Director

LDWF/USFWS Permitted Avian Rehabilitation

220 Cambridge Dr.

Lafayette, LA 70503

337-501-4523



We are a licensed, non-profit wildlife rehabilitation facility funded solely through donations.  Thank you for your support. https://tinyurl.com/DonateForTheBirdsofAcadiana



For The Birds of Acadiana is a non-profit organization, classified as tax-exempt under section 501(c)(3) of the Internal Revenue Code.  Contributions may be deductible to the extent permitted by applicable laws.  Consult with your tax professional for details.  Our Federal Tax ID number is 85-1024416.  


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