听力音频：

• Nests are built alongside coastlines and 31 ______ where they can be camouflaged.
• Populations are now rising, but in 1983 there were only 32 ______ breeding pairs.
• Low numbers and unstable habitats make it difficult to 33 ______ population.

• Human activity: Housing developments mean beaches are used more often
• Increased coastal 34 ______ means that more animals trample nests.
• Wildlife: Adult birds are rarely at risk, but predators target the 35 ______
• Environment: Nests are in vulnerable locations and are at risk of destruction by 36 ______

• Securing individual nests with a 37 ______ caring for them all day.
• Introducing 38 ______ to prevent humans from entering nesting areas.
• Tagging individual chicks with 39 ______ bands to monitor activity.
• Hand-rearing abandoned chicks until they can be released.
• Captive breeding programs, although these need more research.
• Raising awareness through the 40 ______

答案