Top 10 fastest birds in the world and their speeds:

Peregrine Falcon - This bird is known for being the fastest animal on Earth. It can reach speeds of up to 389 km/h (242 mph) when it's diving to catch its prey.

Golden Eagle - The golden eagle is a powerful bird of prey that can reach speeds of up to 320 km/h (200 mph) when it's diving to catch its prey.

White-throated Needletail - This bird is a swift that can fly at speeds of up to 169 km/h (105 mph).

Gyrfalcon - The gyrfalcon is a large falcon that can reach speeds of up to 130 km/h (81 mph) when it's diving to catch its prey.

Grey-headed Albatross - This bird is a large seabird that can fly at speeds of up to 126 km/h (78 mph). It's known for being one of the fastest birds in level flight.

Common Swift - This bird is a small, fast-flying bird that can reach speeds of up to 111 km/h (69 mph).

Red-breasted Merganser - This bird is a duck that can fly at speeds of up to 100 km/h (62 mph). It's known for its powerful, streamlined body.

Spur-winged Goose - This bird is a large waterbird that can fly at speeds of up to 88 km/h (55 mph).

Eurasian Hobby - This bird is a small falcon that can reach speeds of up to 80 km/h (50 mph) when it's diving to catch its prey.

Frigatebird - This bird is a large seabird that can fly at speeds of up to 78 km/h (48 mph). It's known for its long, narrow wings that allow it to soar effortlessly over the ocean.

It's important to note that these speeds are the maximum recorded speeds for these birds and may vary depending on factors such as age, sex, and weather conditions. Nonetheless, these birds are all incredibly impressive for their speed and agility in the air.