Gossau 1. May (from Claudio)

I'm observing the "Kiebitz". It seems that the left side pair have 3 chicks (probably they lost one) and I see only the male leading and hiding his chicks. I'missing the female - it's strange (?). The right side pair have still all 4 chicks. Here I'm missing the male (?). When a Crow or a Black Kite appears then I see two Kiebitz attacking, but because of the limited view I can't assign them (Claudio),