Why removing some of the sand has led to a decrease in the number of puffins?

Removing some of the sand from puffin habitats can disrupt their nesting sites, as puffins often rely on sandy or loose soil for burrowing. This alteration can make it difficult for them to create safe and suitable nests, leading to decreased reproductive success. Additionally, changes in the local ecosystem might affect the availability of food sources, further impacting puffin populations. Ultimately, habitat modification can threaten their survival and reduce their numbers.