All about Great Crested Grebes

Colin Smale looks at the life of one of the most eye-catching birds seen on Lincolnshire’s lakes.

The Great Crested Grebe (Podiceps cristatus) is a striking water bird found across Europe, with around 5,000 breeding pairs in the UK.

These elegant birds are a familiar sight on Lincolnshire’s lakes, where, during the months of March to about June their intricate courtship displays captivate birdwatchers, local joggers and casual visitors alike.

Known as a ‘water ballet’, the courtship involves synchronised movements, neck arching, and the iconic moment when the male presents water plants to the female – a ritual symbolising his commitment.

Nesting sites
The breeding season for Great Crested Grebes typically begins in February, extending through June.

During this time, they construct floating nests, often hidden among reeds near the water’s edge. These nests, however, are increasingly at risk due to human activity and modern environmental challenges.

One significant threat comes from off-leash dogs disturbing nesting sites, which can lead to eggs being abandoned or destroyed. Dog walkers are encouraged to keep their pets under control near lakes during the breeding season to help safeguard the birds’ reproductive success.

Another emerging hazard for grebes nowadays is the presence of released turtles, usually the red-eared turtle or terrapin, often former pets that have been discarded into local waterways. These non-native reptiles compete for nesting spaces, sometimes commandeering grebe nests for sunbathing, which prevents the bird from incubating and will probably smash the eggs if it is heavy enough.

This unexpected competition can disrupt the grebes’ breeding cycle, further stressing their populations.

Despite these challenges, the Great Crested Grebe remains a beloved species, drawing nature enthusiasts to Lincolnshire’s lakes each year. Their dazzling displays of devotion and graceful movements remind us of the wonders of the natural world and the importance of protecting these habitats.

By minimising our human impact and tackling invasive species, we can ensure these iconic birds continue to thrive for generations to come.

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