Some fishing boats now use streamers to reduce bird bycatch. What are the pros and cons of this method? A. It is cost-effective, but it rarely protects wildlife.

B. Less bait is lost, but they have not been adopted for use in all countries.

C. They add value to the boat, but most boats can not afford to add them.

D. They increase the fishing haul, but there is a great amount of effort needed to deploy them.