A great spotted woodpecker leaves its hole to prey for food in a forest by the Hunhe River in Shenyang, northeast China's Liaoning Province, May 22, 2019. (Photo: Xinhua)

A great spotted woodpecker feeds its chick in a forest by the Hunhe River in Shenyang, northeast China's Liaoning Province, May 22, 2019. (Photo: Xinhua)

A great spotted woodpecker feeds its chick in a forest by the Hunhe River in Shenyang, northeast China's Liaoning Province, May 22, 2019. (Photo: Xinhua)

A great spotted woodpecker leaves its hole to prey for food in a forest by the Hunhe River in Shenyang, northeast China's Liaoning Province, May 22, 2019. (Photo: Xinhua)

A great spotted woodpecker feeds its chick in a forest by the Hunhe River in Shenyang, northeast China's Liaoning Province, May 22, 2019. (Photo: Xinhua)