The first migrators I encountered at Naiin were Yellow Wagtails: Eastern and Western, and the Siberian, in Japanese キマユツメナガセキレイ, マミジロツメナガセキレイ, シベリアツメナガセキレイ. Their names always confuse me. I will call them just that. Numerous birds were feeding on a barren field. Later, at Komoda, we saw 2 in the rice fields. A Western and a Siberian, getting in each other's way.
Below a Siberian Yellow Wagtail, シベリアツメナガセキレイ
The reflection of the water makes its belly look mottled
Siberian Yellow Wagtail, シベリアツメナガセキレイ in front
Western Yellow Wagtail, マミジロツメナガセキレイ behind
They don't get along...
Sometimes it's confusing, who is who
Look at the long claws!
Back to the fields in Naiin,
Western Yellow Wagtail, マミジロツメナガセキレイ
Siberian Yellow Wagtail, シベリアツメナガセキレイ
Eastern Yellow Wagtail, キマユツメナガセキレイ
Last a White Wagtail, ホオジロハクセキレイ, Amur White Wagtail