Editor's note: "Hidden World of Birds in City" is about exploring a world of birds that usually goes unnoticed in urban spaces. This episode features photographs from Wang Xiaobo, who has been bird-watching near his residential community in Beijing for the past eight years.

Bird migration reached a new peak on Wednesday as Wang observed a record high of 625 birds of prey, including 601 eagles, fly across his community from 7 a.m. to 1 p.m.  Wang said this is the most magnificent scene he has seen since 2018. The second-best record was on May 11, 2020, with only 262 birds of prey seen.

So far, over 60 species have been seen in May, which is equivalent to the total number of recorded species in March this year. Four new species that have never been observed in the community were spotted, pushing the total number of species to 197.

Based on Wang's experience, the number and variety of the migratory birds may drop immensely as peaks usually fall on May 11. He is expecting the other big movement of the birds in September after they have mostly brought up their chicks and start to journey back to warmer places.

More from 'Hidden World of Birds in City':

Hidden World of Birds in City: Beauty captured on the way

Hidden World of Birds in City: Catching the train of late spring

Hidden World of Birds in City: Welcome back

Hidden World of Birds in City: Birds in blossom

Hidden World of Birds in City: A busy pond

Hidden World of Birds in City: Highlights

Hidden World of Birds in City: Air predators

Hidden World of Birds in City: Migratory birds

Hidden World of Birds in City: The birds awaken

(If you want to contribute and have specific expertise, please contact us at nature@cgtn.com.)