The grey heron ( which occupies the same ecological niche in Eurasia as the great blue heron ) has very similar plumage .
The grey heron ( which occupies the same ecological niche in Eurasia as the great blue heron ) has a solidly soft - gray neck .
The grey heron ( which occupies the same ecological niche in Eurasia as the great blue heron ) has very similar plumage , but has a solidly soft - gray neck .