David Pattyn / Great crested grebe (Podiceps cristatus) adult with freshly caught fish. Tench (Tinca tinca) to feed to its young chick, Valkenhorst Nature Reserve, Valkenswaard, The Netherlands, June

David Pattyn / Great crested grebe (Podiceps cristatus) adult with young on its back and in the water, Valkenhorst Nature Reserve, Valkenswaard, The Netherlands, June

David Pattyn / Great crested grebe (Podiceps cristatus) adult with young on its back, Valkenhorst Nature Reserve, Valkenswaard, The Netherlands, June

David Pattyn / Great crested grebe (Podiceps cristatus) adults courting and greeting each other to confirm their bond. Even with the young chicks already out they often show courtship behavior to each other, Valkenh...

Andy Rouse / Pair of Great crested grebes (Podiceps cristatus) courting, Cardiff, Wales, UK, March.

Andy Rouse / Pair of Great crested grebes (Podiceps cristatus) courting, Cardiff, Wales, UK, March.

David Pattyn / Great crested grebe (Podiceps cristatus) portrait. The Netherlands. April.

David Pattyn / Great crested grebe (Podiceps cristatus) with discarded fishing net around the neck. The Netherlands. April.

David Pattyn / Great crested grebe (Podiceps cristatus) stretching its wings. The Netherlands. June 2014

David Pattyn / Great crested grebe (Podiceps cristatus) close-up in breeding plumage. The Netherlands.June 2014

David Pattyn / Great crested grebe (Podiceps cristatus) fluffing up its feathers, during courtship dance, whilst its mate dives underwater, The Netherlands. April.

David Pattyn / Great crested grebe (Podiceps cristatus) performing courtship dance with one emerging from water right in front of the other which has fluffed up its feathers. The Netherlands. April.