Green Woodpecker (Picus viridis)

Green Woodpecker (Picus viridis)

Observation - Green Woodpecker (Picus viridis). Description: Unknown to me,Yellow back, red streak on head. I've seen this bird several times and would like help identifying it.

Unknown to me,Yellow back, red streak on head.

I've seen this bird several times and would like help identifying it.