New Delhi, June 28 -- As Europe scorches under extreme heat, people aren't the only ones impacted by the high temperatures and humidity. Birds and other wildlife are at risk without respite, too.

Birds, especially, are crucial to ecosystems across the globe, providing services like pollinating flowers, controlling pests naturally, dispersing seeds and even serving as early warning systems.

Experts said there are ways to respond if people see a bird in need in the heat, and how to react to other wildlife. Here's what to know.

What happens to birds in high heat?

Birds are very diverse, and often well adapted to dealing with prolonged periods of heat, said David Bird, McGill University emeritus professor of wildlife biology.

They also h...