What types of prey do non-venomous snakes commonly feed on in Mallorca?

Non-venomous snakes in Mallorca tend to have a varied diet that reflects the island's diverse habitats and ecosystems. These snakes commonly feed on small vertebrates such as amphibians, lizards, and rodents, which are abundant across the island’s scrublands, forests, and agricultural fields. Their diet can also include birds, particularly nestlings or eggs, when the opportunity arises. The availability of prey changes with the seasons, influencing their feeding patterns and activity levels.

Amphibians like frogs and toads are frequent prey items due to the island’s several freshwater sources where these amphibians thrive. Lizards, such as geckos and the native Balearic wall lizard, are also commonly hunted since they are prevalent in rocky and dry environments. Rodents, including mice and small rats, become a more significant food source particularly in rural or semi-urban areas. This diet helps regulate local pest populations, making these snakes important for ecological balance.

In addition to vertebrate prey, some non-venomous snake species may occasionally consume large insects or other invertebrates, although this is less common. Their hunting methods typically rely on stealth and quick strikes rather than venom, often consuming prey alive or subduing it through constriction. By adapting their diet depending on availability, non-venomous snakes serve a vital role in Mallorca’s natural food web, contributing to the health of their ecosystems without posing threats to humans.