Author 'Boucher Marc dit de Meilh' (Id 144850 ) : A more general view taken in Savoy at Lac du Bourget. Great Crested Grebe. (The Great Crested Grebe (Podiceps cristatus) is a species of aquatic bird of the family Podicipedidae.) These two are great crested grebes 'courtship'. This is the season which starts from April to July, sometimes earlier in season. We must find a reliable partner to prolong its existence and hence this scene is quite extraordinary. I had not met until now, this type of attitude in this beautiful aquatic birds where very often 'chest against chest it screams by turning his head upside down, pell-mell. : 19: The nest is made like a raft with the plants nearby. Here near Le Bourget du Lac Savoie. Marc Boucher said Meilhan.