An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

Egrets and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret rests on a branch at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

Egrets and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

Egrets fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

Egrets and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret fledging spreads its wings at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

Egrets and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

An egret and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)

Egrets and fledgings are seen at the Xiangshan forest park in Nanchang, east China's Jiangxi Province, May 21, 2019. Ecological protection of the Xiangshan forest park has created a friendly environment for egrets to rest and reproduce their offsprings. (Photo: Xinhua)