Birds and Turbines: Complete AFTER Reading

According to the passage, what is the estimated number of bird deaths per year in the US caused by cats?

• 10,000 to 40,000

• 40 million to 50 million

• 130 million to 174 million

• 100 million to 1 billion

Which human cause is associated with the least number of estimated annual bird deaths according to Table I?

• Pesticides

• Automobiles

• Lighted communication towers

• Wind turbines

What is the average number of birds killed per wind turbine per year, as indicated by US studies?

• Less than one bird per turbine per year

• 4.72 birds per turbine per year

• 7.5 birds per turbine per year

• Between 10,000 and 80,000 birds per turbine per year

Which of the following is NOT one of the three major ways birds can be impacted by wind energy production mentioned in the passage?

• Collisions

• Avoidance

• Direct habitat impacts

• Pollution

What is one way birds save energy during migration according to the text?

• By flying at lower altitudes

• By traveling on air currents

• By resting more frequently

• By flying in cooler temperatures

What risk do wind turbines pose to birds during their migration?

• The noise can disorient them

• They can collide with the turbines

• They can get lost due to the turbines

• The turbines can attract predators

Why might birds not see dangers such as spinning turbines when they are feeding?

• Because they are usually asleep

• Because they are too high in the sky

• Because they are focused on their prey

• Because the turbines are usually hidden

What is a potential risk to birds during the breeding season from wind turbines?

• The turbines can destroy their nests

• The turbines can cause a shortage of food

• The turbines can emit harmful radiation

• The turbines can be a threat due to their ground proximity

How can power lines associated with wind turbines be dangerous to birds?

• Birds can get tangled in the lines

• Birds can be electrocuted by touching two energized parts

• Birds can mistake the lines for food

• Birds can collide with the lines due to poor visibility

What behavior do some birds exhibit that makes them avoid areas with tall objects like wind turbines?

• Hibernation

• Avoidance

• Migration

• Camouflage