Crows and European chafer beetle (Rhizotrogus majalis)

Crows are known to eat a variety of insects, including grubs. Some of the grubs that crows commonly consume include:

1. Beetle grubs: Crows often feed on the larvae of beetles, such as June beetle larvae (also known as white grubs) and Japanese beetle larvae.
2. Moth larvae: Crows may also eat caterpillars and larvae of various moth species, such as cutworms and armyworms.
3. Fly larvae: Crows are opportunistic feeders and may consume fly larvae found in decaying organic matter, such as maggots.
4. Ant larvae: While less common, crows may also eat ant larvae if they come across ant nests.

These are just a few examples of the types of grubs that crows are known to eat. Crows are highly adaptable birds and will consume a wide range of food depending on what is available in their environment.