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Claim: The Eurasian collared-dove species has a negative impact on the different populations of native bird species.

Evidence:
- The Eurasian collared-dove occupy an ecological niche that is very similar to other members of the dove family, such as how the Native Mourning dove and the White- Winged dove eat the same birdseed as the Eurasian collared-dove. They all also consistently perch on telephone wires.
- The Eurasian collared-dove was introduced to the Bahamas in 1970 and spread from there to Florida in just 12 years. In the next 22 years, the species spread across the entire U.S.
- It took only five years for the Eurasian collared-dove to spread from the southeast region of Arkansas all the way to the northwest region.

Reason: Because the Eurasian collared-dove occupies similar niches to other dove species, this would cause Eurasian collared-doves to compete with the other doves for food and other resources. The Eurasian collared-dove species reproduces quickly, which increases their range expansion. This rapid growth made it easier for the Eurasian collared-doves to easily outcompete other native dove species.

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How has the spread of the Eurasian collared-dove affected different populations of native bird species?

Claim:
- The spread of the Eurasian Collared-dove has had a negative impact on native bird populations.

Evidence:
- Since introduction in 1970, the Eurasian collard-dove has expanded across the entire country. Refer to the map on page 30. In 1990, the species was limited to Florida. By 2012, the species had spread exponentially across the entire US. From 1997 - 2002, it took only five years for the Dove to populate the entire state of Arkansas. (Pages 29 - 30)
- "Eurasian Collared-Doves are one of very few species that can drink “head down,” submerging their bills and sucking water as though drinking through a straw. Most birds must scoop water and tip the head back to let it run down into the throat." (Eurasian Collared-Dove, Life History) These birds eat a wide variety of foods ranging from seed and cereal grain (this includes millet, sunflower, milo, wheat, and corn) to berries, some green parts of plants, and invertebrates.

https://www.allaboutbirds.org/guide/Eurasian_Collared-Dove/lifehistory
- The Eurasian Collared-Dove seems to occupy a nice that is very similar to other members of the dove family. Scientists are still determining if the Eurasian dove will outcompete native dove species for available resources.
- In just about 40 years, th

Reasoning:
- The Eurasian-Collared Dove is a versatile species with a high reproduction and survival rate. It is an invasive species with a clear competitive advantage over other native species.
- The Eurasian Collared-Dove occupies a variety of niches and retain multiple evolutionary advantages compared to native species. These advantages have allowed the dove to spread at the alarming rate posted earlier.
- The Eurasian collared- doves are able to colonize at an alarming rate. They are quickly reproducing, and are using up liable resources which other native species can thrive on. Other native birds are being pushed out of their niche, and are decreasing in population.

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The Eurasian collared-dove does not have a negative impact on the populations of native bird species.

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The Eurasian collared-dove does not have a negative impact on the populations of native bird species.

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Evidence:
- Eurasian collared-doves live in suburban areas.
- The Eurasian collared-doves are not protected by hunting because they are not native to the area, so they are a popular game bird.
- The Eurasian collared-dove can feed peacefully in mixed flocks

Reasoning:
- Researchers have found that the abundance of native dove species is greater at sites where the Eurasian collared-dove lives. This shows that the collared dove does not overrun the other species. It can peacefully feed even when other species are around. It is not going to try to scare off the other species. It is content with being around the native species. Also because it is a popular game bird, it population growth is in check because the other birds are protected from hunting. Finally because the collared doves live in suburban areas, they are not disturbing the native species' habitats. They are able to live in the human-populated areas, because they are invasive species.

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Owen Sirois, Konner Hill, Zie Moyes, Kendall Kelly 

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Owen Sirois, Konner Hill, Zie Moyes, Kendall Kelly 

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Claim- Other dove populations such as the White-Winged Dove, and  are affected by the spread of the Eurasian collared-dove by overpopulating, and driving out the other species through competition, however the Mourning Dove is not affected due to differences in competition, and population size.
Evidence
-In just 22 years it has spread from its first introduction in Florida to the rest of the United States. The explosion in the bird's population has pushed other species out of their natural habitats by competition
-White-Winged Dove populations have been decreasing since the introduction of the Eurasian collared-dove.
-The Mourning Dove's population has stayed about the same since the introduction of the Eurasian collared-dove has spread.
Reasoning
-Since the Eurasian collared-dove has spread throughout America  so quickly that it can be inferred that it out competes other native species such as the Mourning Dove, and the White-Winged Dove. The White-Winged Dove is in direct competition with the Eurasian collared dove because since it has came into the White-Winged Dove population it has decreased. The Eurasian Dove has indirectly affected the Mourning Dove as before the introduction of the Eurasian collared dove the Mourning dove's population was going up until the Eua
If mourning dove populations ever dip a significant amount when adjusted for hunting then it can be inferred the eurasian dove has started affected birds outside of its niche.

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How has the spread of the Eurasian collared-dove affected different populations of native bird species?

Claim- The spread of Eurasian collared doves have affected different populations of birds across the country in a negative way.

Evidence-
1. In Arkansas, for example, it only took five years (1997-2002) for it to spread from the southeast corner of the state to the northwest corner. (500 km)
2. The oldest Eurasian collared dove from the wild was at least 13 years, and 8 months old.
3. The Eurasian dove species eats a diet that mainly consists of seeds and nuts, similar to native dove species.

Reasoning-
These doves have negatively affected populations of birds by  competing for similar resources, occupying the same niche as native dove species, and it's ability to survive for very long and adapt to new surroundings.  Native dove species and Eurasian doves seem to be occupying the same ecological niche.

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Good job using specific species of native birds as an example in your CER. Instead of just saying that many bird species are affected by the spread of the Eurasian Dove you gave specific examples of species that are fighting for their food, the white winged dove and common ground dove.

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Feedback
Talking about how Eurasian Collared Doves eat the same thing as other doves strengthens your argument because it provides evidence as to why the Eurasian Collared Doves and other doves occupy the same niche.

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In your evidence, you said that the Eurasian collared-doves eat the same food which is similar to the native doves, and I think that supports your claim very well.

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Your evidence was good because you used exact evidence that showed your claim through numbers.

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your evidence supported the claim by saying that the birds live for a long time. This allows it to have more time to breed, and leads to more reproduction of this species, which then takes up more food and leaves less for other species. If you explained this more in depth, it could explain with more detail why they Eurasian collared doves had a negative impact.

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I think your evidence, and I think it sup[ports your claim very well. Good job.

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Could use a little longer evidence but the reasoning did a good job explaining the evidence.

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You have a good claim and strong evidence to back it up. Your reasoning seems to have new evidence in it, but it also did a good job of connecting each piece of evidence you had to your claim.

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You're 3rd piece of evidence supports the claim that the Eurasian collared dove impacts other species of birds because if it eats the same types of seeds, there is increased competition.

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The evidence you presented in your CER about the eating and drinking habits of the Eurasian dove provides great support for your claim and your reasoning.

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Your evidence is strong and supports your claim well especially the evidence about the way the Eurasian dove eats and drinks.

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Your reasoning is very solid and explains your evidence well.

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the second piece of evidence is very supportive to your claim because it gave real facts and statistics for what the collard dove did.

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Your evidence contained specific data, which strengthened your argument and supported your claim

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Your reasoning was very effective in supporting your claim and evidence because you guys explained and connected your reasoning to your claim and evidence. Very good job.

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This is what I found after finishing ours as well! This is really interesting.

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Your evidence was very effective especially the example given in Arkansas because it shows just how fast the population of doves moved through the US.

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I really like your 2nd piece of evidence to support your reasoning where you showed how quickly they can travel.

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Teagan, Joseph, and Camryn Claim... The introduction of the Eurasian collared-dove decreased populations of native bird species

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Teagan, Joseph, and Camryn Claim... The introduction of the Eurasian collared-dove decreased populations of native bird species

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Evidence
-  the Eurasian collared-doves occupy the same niche as native doves where they both compete for seeds and corn.
- In 5 years the Eurasian collared-doves were able to spread from the southeast all the way to the northwest region
- by 2012 the Eurasian collared-dove spread across the nation an now occupy the whole US
Reasoning: Invasive species are not native to an ecosystem, they colonize community and spread rapidly. The Eurasian collared-doves are able to colonize new areas at an alarming rate, because they can grow fast, reproduce often and compete aggressively for resources. In conclusion, they decrease the native bird populations by pushing them out of their ecological niche.

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Your first piece of evidence was effective in supporting your claim because it described the relationship between foreign and native species of birds as a competition.

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Feedback:
Your evidence was very effective in supporting your claim because in your 2nd piece of evidence, there was a factual statement that relates directly to your claim that it has had a negative impact on native bird species. This species of dove spread across the Bahamas and United States rapidly, which it's niche was the same as many other native birds, and became superior.

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your third piece of evidence supports your claim very well becuase it is saying how the Eurasian collared dove eats the same food as other native dovespecies which would lead to a decline in the other species becuase they have less food.

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I have to say that I like the format in how you laid out the evidence. All the evidence was numerically factual and true. My problems arise with #2 in the evidence and then the Reasoning section. #2 does not provide any reasoning to why the dove has an evolutionary advantage. If compared to other bird species then I feel that it would be adequate in its support. Right now it is a blank ticket. My largest problem lies with the reasoning. In summary, the reasoning is just an extended version of the claim. It is supposed to explain how the evidence supports your claim. Instead, it restates the evidence without the numbers and merges with the claim. This could have been stronger.

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In your evidence where you talked about how the Eurasian Collard Dove best suites this question because that is the only piece of evidence that really shows that there is a negative effect on other populations. But that piece of evidence is really strong and best supports your claim and is best supported by your reasoning.