Little Grebe

What do Little Grebes look like?

Little grebes are small, rounded water birds, with plumages that vary according to the time of year. In breeding season, little grebes are blackish-brown, with a chestnut throat and cheeks, and a pale yellowish patch at the base of the bill. Their flanks are a lighter brown, fading to a paler tail, which appears fluffy. Their legs are greenish, and placed far back on their bodies, meaning that they can only walk very clumsily on land.

The non-breeding plumage of a little grebe is less vibrant, with grey-brown upperparts and crown, a whitish throat, chin and breast, and buff-brown streaky markings on the face, neck and flanks.

Sexes are alike in appearance, although females are usually slightly smaller than males.

The plumage of juvenile little grebes is similar to that of non-breeding adults, but features more dark markings on the face, with an overall darker appearance than the buff-brown of adults.

What sound does a Little Grebe make?

Little grebes are noisy birds, with both males and females emitting a powerful whinnying trill. A harsh alarm call that sounds like ‘weeeib’ can also be heard around the nest site when threats are detected.

What is the habitat of a Little Grebe?

A range of wetland environments offer a suitable habitat for breeding little grebes, including lakes, reservoirs, bays, slow rivers and canals, and gravel pits with plenty of vegetation and shelter around the fringes.

They are unable to walk well on land, so spend much of their lives on water or at the very edges of lake shores.

In winter months, vegetation cover becomes less important and little grebes become more common at estuaries and sheltered coasts.

What is the range of a Little Grebe?

Little grebes are resident across Europe from the British Isles in the west, north as far as parts of southern Scandinavia, into Poland in the east, and along the Mediterranean coast into North Africa in the south.

Breeding occurs further east, throughout eastern Europe and into Central Asia. Resident populations are also present across sub-Saharan Africa, south Asia, and parts of east and south-east Asia.

Where do Little Grebes live?

Across Europe, countries with notable populations of little grebes include Hungary, Germany and Poland.

Populations in Scandinavia have increased in recent decades as a result of warmer conditions throughout the year.

How rare are Little Grebes?

With a population of around 3,650 to 7,300 breeding pairs in the UK, little grebes are not the most common waterbirds, but during winter, this number increases to up to 15,000 birds, and sightings become less rare.

Globally, little grebes are relatively common and widespread, with a total population across Europe estimated at up to 3.5 million birds.

Where can you see Little Grebes in the UK?

Little grebes breed throughout the UK, but are not usually found in upland areas or the extreme northern regions of Scotland, south-west England and much of the interior of Wales.

In winter, it’s common for little grebe populations to shift temporarily towards coastal and estuary environments, and sightings are concentrated in the Thames Estuary, Chew Valley Lake and Rutland Water.

Do Little Grebes migrate?

Some migration does occur, particularly where the lakes and reservoirs used for breeding freeze in winter.

Relocation to coastal wetlands or estuaries is common in winter, and in the eastern part of their European range, migration west and south is frequently observed until conditions improve the following spring.

Are Little Grebes native to the UK?

Little grebes are native to the UK, both breeding and spending winters in the British Isles.

They do temporarily move to coasts, estuaries and lakes without vegetation during winter months, but return to canals, ponds, and inland lakes to breed.

• Look for Little Grebes in small ponds, lakes, and slow-moving rivers
• Listen for their distinctive whinnying trill, often heard during the breeding season
• Observe their frequent diving behaviour, which can help distinguish them from ducks
• In the UK, check wetland areas year-round, as many birds are resident

What do Little Grebes eat?

The diet of little grebes comprises insects, small fish, and amphibians, particularly small newts and frogs.

Crane flies and mayflies and their larvae are among the most important food sources, and crustaceans and molluscs are also eaten.

What do baby Little Grebes eat?

Baby little grebes are able to swim and hunt almost immediately and follow a similar diet to adults from the outset, eating small insects and their larvae from the water’s surface, before they quickly master the art of diving for prey.

Where do Little Grebes nest?

As they’re unable to walk well on land, little grebes’ nest sites are located in vegetation at the edges of wetlands and in reedbeds.

A floating nest is built from plant matter, sticks, grasses, moss and reeds, and anchored to the stems of waterside plants.

What do Little Grebe eggs look like?

The breeding season for little grebes takes place between February and September, although most are laid between April and late June. Between four and seven eggs are usually laid per clutch, and are off-white to cream in colour, measuring 38 mm by 26 mm (1.5 in by 1 in).

The incubation period lasts for 19 to 23 days, with males and females sharing the task.

Do Little Grebes mate for life?

Little grebes raise two to three broods together in a typical season and are a monogamous species, usually remaining paired for longer than one breeding season.

Outside of the breeding season they become solitary, but pair up again with an elaborate courtship ritual at the start of each spring.

Are Little Grebes aggressive?

Little grebes are generally solitary birds, but sometimes nest in loose colonies, in groups of between 5 and 30 birds. They avoid danger by diving under the water’s surface, where they can remain for up to 30 seconds.

They regularly associate with other larger waterbirds, such as coots and mallards, feeding on prey that is disturbed and brought to the water’s surface by the movement of the larger birds.

How long do Little Grebes live?

The average lifespan of a little grebe is thought to be between 10 and 15 years, with first-time breeding typical at one year.

What are the predators of Little Grebes?

Due to their tiny size, little grebes are at risk of predation from a number of birds, animals, and even fish.

Northern pike are known to eat little grebe hatchlings, while birds such as herons and cormorants are also a threat.

Due to the species rarely spending any time on land, little grebes are not typically at risk from land predators such as foxes, but water-dwelling mammals, such as otters, may sometimes catch them.

Are Little Grebes protected?

Little grebes are included in the Wildlife and Countryside Act, 1991, which offers them protection against being knowingly killed, injured or taken into captivity.

Are Little Grebes endangered?

Little grebes are classed as a species of least concern and are ranked as Green on the British Birds of Conservation Concern list.

Due to their size, cold winters may impact survival, and notable declines in numbers have followed the harshest winter seasons, particularly in Britain in 1962-1963 and in the Netherlands in 1984-1985.

While the Little Grebe is listed as Least Concern globally, it faces localised threats from habitat loss and degradation.

Wetland conservation efforts, particularly in Europe and Asia, are crucial for maintaining healthy populations. Climate change and water pollution also pose potential long-term risks to this species.

Little grebes are by far the smallest members of the grebe family, and also the smallest British fish-eating waterbird, with males slightly larger than females in length, weight and wingspan:

• Length: 25 cm to 29 cm (9.8 in to 11.4 in)
• Wingspan: 40 cm to 45 cm (15.7 in to 17.7 in)
• Weight: 100 g to 140 g (3.5 oz to 4.9 oz)