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The Eurasian Collared-Dove has pushed other species out of their homes by out competing the native species and taking over their respective niche.

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Question - How has the spread of the Eurasian Collared-Dove Affected different populations of Native Bird Species?

Claim - The Eurasian Collared-Dove Occupy a similar niche as certain native birds, leading to natural selection, and competition between the species.

Evidence - The Eurasian Collared-Dove took 5 years to spread from the southeast corner of Arkansas to the northwest corner, which occupies around 500 kilometers. That is a total of 100 km per year!
Evidence -The Eurasian Collared-dove does not migrate, it spreads and then colonizes new areas at an alarming rate.
Evidence - The Bird was introduced in the Bahamas in 1970 and spread to Florida in 1982.

Reasoning - Eurasian Collared-Doves spread so quickly due to being introduced by human activity, reproduce often, compete aggressively for resources, have a lack of natural predators altering habitats and upsetting the balance of ecosystems. In relation to the competitive exclusion principle, two species cannot coexist in the same community; the eurasian Collared-doves can easily wipe crout other habited species creating a widespread panic from native animals.

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Claim: The eurasian collared-dove is an invasive species, and affects many native species by occupying similar niches.

Evidence: It only took five years to travel from the southeast corner of Arkansas to the northwest corner of the state.

Evidence: Introduced to the Bahamas in 1970, and has since spread across North America. The dove has been sighted everywhere in the country by 2012, compared to the sightings in Florida alone around 1990.

Evidence: The Eurasian-collared dove occupies similar niches to the rock pigeon, and the Inca dove because they both live in cities and suburban areas, and eat similar food; seeds and grains. This causes competition between the species, and harms the other species.

Reasoning: The Eurasian collared-dove has spread all over the continental United States, and has affected different species, causing competition between different bird species. By occupying similar niches to the Rock Pigeon and the Inca Dove, the Eurasian Collared-Dove’s greater numbers and rapid reproduction could likely cause these related species to dwindle in size.

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The spread of the Eurasian Collared-Dove has affected different populations of native birds by creating competition.

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The Eurasian collared dove has a similar ecological niche to other doves/This will cause competition for available resources, since the Eurasian Collared-dove will be hunting for the same resources as native doves.

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Competition ADI: Kylie, Garrett, Lindsay and Michael

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Competition ADI: Kylie, Garrett, Lindsay and Michael

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

Claim: The spread of the Eurasian collared-dove affects different populations by increasing competition and testing the limits of natural selection.

Evidence: No natural predators
Reasoning: Since Eurasian collared-doves are not native to America, there are no natural predators to decrease the population size and consequently keep the population from expanding too quickly. With access to natural resources and nothing to prevent rapid growth of Eurasian collared-doves, the population will swiftly go out of control.

Evidence: Occupies similar biological niche to other members of the dove family.
Reasoning: The Eurasian collared-dove occupies a similar niche to the other members of the dove family (Columbidae) that already live in The United States. According to Georgii Gause’s competitive exclusion principle, the collared-dove and other members of the dove family cannot coexist with the same niche. This means that competition would increase between the collared-dove and native doves because they eat similar food and have similar behavioral patterns, putting a negative pressure on native dove species.

Evidence: Spreads across land quickly and reproduces fast. In 22 years these birds were able to spread from Florida to all of the U.S.
Reasoning:  Because Eurasian collared-doves reproduce at a fast rate, they exhaust resources at a fast rate. This leads to aggressive competition for said resources between species that occupy similar niches. All in all this causes displacement of native species and disruptions in ecosystems.

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The Mourning Doves have been sighted more in the eastern US and less in the western US this year than in years prior, going from around a 20% concentration to 5% concentration in the west, as the Eurasian Collared-Dove has spread westward in the same time.

The Eurasian collared-dove was introduced into the Bahamas in 1970, where it them spread to Florida by 1982, with the bird now having a 10%-100% concentration in the Eastern Midwest and the West of the United States, and a 0-2% concentration of the population in the Northeast Midwest.

The White-Winged Dove population has decreased in their normal area of the west coast, moving them towards Mexico, compared to years past. The larger population concentration of over 40% has decreased to a concentration of less than 10% in the majority of the US.

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The populations of the Eurasian Collared-Dove is more concentrated on the West coast. The collared-doves must have come in and pushed out the mourning doves causing them to relocate back to the east coast.

The Eurasian Collared-Dove acts as an invasive species that is able to occupy locations in the United States in large concentrations. This is because they colonize and not simply migrate, allowing them to make their permanent habitats and homes in the Midwest and West and the population is able to spread out from there.

The Eurasian Collared Dove is outcompeting the White-Winged Dove and pushing them out of their original home on the west coast towards Mexico.

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It only took 5 years for the Eurasian Collared dove to spread from the southeast corner of Arkansas to the Northwest corner./This is concerning, because the increasing quickly increasing number of Eurasian Collared-doves increases competition and makes it harder for other species to get food.

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

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The spread of the Eurasian Collared-Dove species has affected different populations of native bird species by creating increases in competition among the species for resources necessary for survival.

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The White Fronted Amazon parrots, native to Mexico, are a specialist species, only eating vegetables and fruit, whereas the Eurasian Collared-Doves are a generalist species and eat fruit and vegetables along with different types of seeds and wheat.

The Barred Owl is a non migratory bird species native to Florida and the areas around it, and the Eurasian Collared-Doves are a migratory bird species who live all around the US.

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Since the Eurasian Collared-Doves are a generalist species with a high population, their population eats out the only food source for the specialist species, such as the White Fronted Amazon parrots, causing them to not have an ample food resource.

Eurasian Collared-Doves are a migratory species found all around the US. There are other species found in the US that are native to the same area that the Eurasian Collared-Doves are also living in that are non migratory species, such as the Barred Owls in Flordia. This causes increased competition for resources necessary for the survival of the species, but the non migratory species do not have the ability to leave the area and find new resources whereas the Eurasian Collared-Doves can. This causes decreases in populations of the nonmigratory species living in those areas as the Eurasian Collared-Doves.

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Invasive species can thrive within a new ecosystem due to its lack of natural predators./ The lack of natural predators allows invasive species, such as the Eurasian-Collared Dove, to reproduce faster than the native bird species. Because of this, invasive species are able to compete with the native bird species.

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Also, the Inca Dove and Rock Pigeon for example are likely deprived of resources because of the Eurasian Collared Dove's dominance numbers wise, and their competition over food intake of similar seeds. Species that would be especially affected are those that specialize their diet, because the generalist diet of the Collared Dove would drain the food source of others while still remaining safe if that food is depleted. Finally, No species in the same niche would be safe from competition because of the Eurasian Collared Dove’s occupation of the entire United States.