What factor is cited as contributing to the decline of the Eurasian Wryneck in areas like the UK?
Answer
Widespread use of pesticides in agricultural areas affecting ant populations
The absolute reliance of the Wryneck on social insects, specifically ants, makes their population highly vulnerable to changes affecting ant abundance. Factors impacting the availability of their primary food source are cited as major contributors to population decline. In particular, the widespread use of pesticides in agricultural areas is explicitly mentioned as affecting ant populations, which consequently impacts the survival and reproductive success of the Eurasian Wryneck in regions such as the UK. This highlights a critical indirect link between agricultural practices, invertebrate ecology, and avian conservation needs.

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