Invading Birds!

The video discusses the concept of invasive species, using starlings in North America as a primary example. Initially absent from the US, starlings were introduced from England and became invasive, outcompeting native birds for resources. The video also highlights accidental invasions, such as the brown tree snake in Guam, and suggests prevention methods like monitoring and careful relocation of species.

What is an invasive species?

• A species that migrates seasonally.

• A species that is endangered and needs protection.

• A species that is introduced to a new area and causes harm.

• A species that is native to a region and thrives there.

How did starlings become a problem for native birds in North America?

• They helped native birds by providing more food.

• They competed for food and nesting sites, outcompeting native birds.

• They only lived in isolated areas and did not interact with native birds.

• They brought diseases that affected native birds.

What was one consequence of the introduction of starlings to the United States?

• An increase in the population of native birds.

• An increase in the variety of fruits available.

• A decrease in the population of native birds.

• No significant impact on the ecosystem.

How did the brown tree snake become an invasive species in Guam?

• It naturally migrated to Guam.

• It was brought as a pet and released into the wild.

• It was accidentally transported via ships or planes.

• It was intentionally introduced to control pests.

What is one method used to prevent the spread of invasive species like the brown tree snake?

• Introducing more predators to control their population.

• Training dogs to detect them in transportation vehicles.

• Building barriers to keep them contained.

• Using pesticides to eliminate them.