David Pattyn / Great crested grebe (Podiceps cristatus) pair wimming very fast next to each other and shaking their heads as a part of their courtship dance. The Netherlands. April.

David Pattyn / Great crested grebe (Podiceps cristatus) portrait on a misty morning. The Netherlands. April.

Alain Ghignone/ BIA / Great Crested Grebe (Podiceps cristatus) parent carrying chicks, Piedmont, Italy

Alain Ghignone/ BIA / Great Crested Grebe (Podiceps cristatus) pair feeding chick, Piedmont, Italy

Andy Rouse / Great crested grebes (Podiceps cristatus) pair in courtship 'weed dance' in morning light, Wales, UK, February.

Andy Rouse / Great crested grebe (Podiceps cristatus) swimming, backlit with morning light forming a bokeh affect on the water, Wales, UK, February. Highly commended in the Habitat Category of the BWPA (British W...

Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship weed dance, Cardiff, UK, March.

Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship weed dance, Cardiff, UK, March.

Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) in urban environment Cardiff, UK

Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship dance at dawn, Cardiff, UK, March.

Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship dance, Cardiff, UK, March.

Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship dance Cardiff, UK, March.