Final answer:
The aye-aye in Madagascar fills a niche similar to that of a woodpecker, due to its specialized foraging techniques.
Step-by-step explanation:
In Madagascar, the aye-aye is a unique primate that fills a similar ecological niche to that of a woodpecker. The aye-aye uses its elongated middle finger to tap on trees to find cavities and then chisels wood away to reach insects inside, much like how woodpeckers use their beaks. This is an example of convergent evolution, where two unrelated species develop similar traits in order to adapt to similar environmental niches. Madagascar's unique physical environment supports a vast array of endemic species, including at least 33 varieties of lemurs and many tropical bird species, which contribute to its high biodiversity. The threats to their habitats, such as deforestation from extensive logging and agriculture, also affect the aye-aye's survival.