26-6-2024 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

The common shelduck (Tadorna tadorna ) is a waterfowl species of the shelduck genus, Tadorna. It is widespread and common in the Euro-Siberian region of the Palearctic, mainly breeding in temperate and wintering in subtropical regions; in winter, it can also be found in the Maghreb.

Fossil bones from Dorkovo (Bulgaria) described as Balcanas pliocaenica may actually belong to this species. More likely, they are an extinct species of Tadorna (if not a distinct genus) due to their Early Pliocene age; the present species is not unequivocally attested from the fossil record until some 2–3 million years later (Late Pliocene/Early Pleistocene).

The common shelduck resembles a small short-necked goose in size and shape. It is a striking bird, with a reddish-pink bill, pink feet, a white body with chestnut patches and a black belly, and a dark green head and neck. The wing coverts are white, the primary remiges black, and the secondaries green (only showing in flight) and chestnut. The underwings are almost entirely white. Sexes are similar, but the female is smaller, with some white facial markings, while the male is particularly crisply coloured in the breeding season, his bill bright red and bearing a prominent knob at the forehead.

Ducklings are white, with black cap, hindneck and wing and back patches. Juveniles are similarly coloured, greyish above and mostly white below, but already have the adult's wing pattern.

The call is a loud honk.

23-4-2023 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

https://www.inaturalist.org/taxa/7067-Tadorna-tadorna

Habitat The species shows a preference for saline habitats and frequents mudflats and muddy or sandy estuaries in coastal regions, and occurs inland on saline and brackish lakes in steppe or semi-desert.  Asiatic populations also occupy freshwater rivers or marshes and other populations utilise freshwater habitats on migration. 

Diet Its diet consists predominantly of salt-water molluscs (e.g. Hydrobia spp.) as well as other aquatic invertebrates (e.g. insects, crustaceans and worms), small fish, fish spawn and plant material (e.g. algae, seeds and agricultural grain)

Breeding site The nest is commonly positioned in a tree-hollow up to 8 m above the ground or in a mammal burrow (e.g. of European rabbit Oryctolagus cuniculus).  Rarely nests may also be placed in the open or in dense vegetation up to 1 km from water. The species will also nest in artificial nest-boxes.

1-4-2022 EL PINET, ALICANTE - COMMON SHELDUCK (MALE) (Tadorna tadorna)

https://www.inaturalist.org/taxa/7067-Tadorna-tadorna

28-2-2022 TABLAS DE DAIMIEL, LA MANCHA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

https://www.inaturalist.org/taxa/7067-Tadorna-tadorna

9-12-2021 CITY OF ARTS AND SCIENCES, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

https://www.inaturalist.org/taxa/7067-Tadorna-tadorna

16-10-2021 AXIOS NAT PARK THESSALONIKI, GREECE - COMMON SHELDUCK (MALE) (Tadorna tadorna)

https://www.inaturalist.org/taxa/7067-Tadorna-tadorna

29-7-2019 ISABEL CATOLICA PARQUE GIJON, ASTURIAS - COMMON SHELDUCK (MALE) (Tadorna tadorna)

17-4-2019 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

3-4-2019 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

18-9-2018 TABLAS DE DAIMIEL, LA MANCHA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

The common shelduck, Tadorna tadorna, is a waterfowl species that graces the Euro-Siberian region with its presence. It is a medium-sized bird, akin to a small, short-necked goose, and is quite the sight with its white plumage contrasted by chestnut patches and a black underbelly. The head and neck are a dark, iridescent green, and the bill is a reddish-pink, with the male sporting a conspicuous knob on the forehead during the breeding season. Pink feet complete the ensemble, making this bird a striking figure in its habitat.

To identify the common shelduck, look for the distinctive reddish-pink bill and pink feet. The male, especially in breeding plumage, has a bright red bill with a prominent knob. The female is slightly smaller and has white facial markings. Both sexes have a white body with chestnut patches, a black belly, and a dark green head and neck. In flight, the green and chestnut secondary feathers become visible, contrasting with the predominantly white underwings.

The common shelduck is found in a variety of wetland habitats, including temperate lakes and rivers, as well as estuaries and tidal mudflats in winter. It has a particular fondness for salt marshes and estuaries and is known to breed in rabbit burrows, tree holes, and even haystacks.

This species is widespread across temperate Eurasia. It breeds in temperate regions and migrates to subtropical areas for wintering. Some populations remain resident in the westernmost parts of Europe, while others undertake movements to moulting grounds like the Wadden Sea.

The common shelduck is a sociable bird, often seen in large moulting flocks that can number up to 100,000 individuals. It is known for leaving its young in crèches supervised by a few adults. The species is also covered by the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA), highlighting its ecological importance.

The vocalization of the common shelduck is a loud, unmistakable honk, which can be heard over considerable distances.

During the breeding season, the male's bill becomes particularly vibrant, and the species is known to nest in a variety of locations, from rabbit burrows to tree holes.

While the common shelduck is quite distinctive, it could potentially be confused with other shelduck species. However, its unique coloration and size generally make it easy to distinguish.

The common shelduck feeds on a variety of items, including mollusks and small aquatic creatures, which it often forages for in the mudflats during low tide.

The IUCN Red List classifies the common shelduck as Least Concern, indicating that, currently, there are no immediate threats to its population numbers on a global scale.

8-7-2018 TABLAS DE DAIMIEL, LA MANCHA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

The common shelduck (Tadorna tadorna ) is a waterfowl species of the shelduck genus, Tadorna. It is widespread and common in the Euro-Siberian region of the Palearctic, mainly breeding in temperate and wintering in subtropical regions; in winter, it can also be found in the Maghreb.

Fossil bones from Dorkovo (Bulgaria) described as Balcanas pliocaenica may actually belong to this species. More likely, they are an extinct species of Tadorna (if not a distinct genus) due to their Early Pliocene age; the present species is not unequivocally attested from the fossil record until some 2–3 million years later (Late Pliocene/Early Pleistocene).

The common shelduck resembles a small short-necked goose in size and shape. It is a striking bird, with a reddish-pink bill, pink feet, a white body with chestnut patches and a black belly, and a dark green head and neck. The wing coverts are white, the primary remiges black, and the secondaries green (only showing in flight) and chestnut. The underwings are almost entirely white. Sexes are similar, but the female is smaller, with some white facial markings, while the male is particularly crisply coloured in the breeding season, his bill bright red and bearing a prominent knob at the forehead.

Ducklings are white, with black cap, hindneck and wing and back patches. Juveniles are similarly coloured, greyish above and mostly white below, but already have the adult's wing pattern.

The call is a loud honk.

Moulting flocks can be very large (100,000 on the Wadden Sea), since most pairs leave their partially grown young in a crèche with just one or two adults.

This species is mainly associated with lakes and rivers in open country, breeding in rabbit burrows, tree holes, haystacks or similar. In winter it is common on suitable estuaries and tidal mudflats as well.

This bird is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.

The young will dive under water to avoid predators and the adults will fly away from them to act as a decoy.

13-6-2018 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

9-5-2018 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

25-4-2016 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)

The common shelduck (Tadorna tadorna ) is a waterfowl species of the shelduck genus, Tadorna. It is widespread and common in the Euro-Siberian region of the Palearctic, mainly breeding in temperate and wintering in subtropical regions; in winter, it can also be found in the Maghreb.

Fossil bones from Dorkovo (Bulgaria) described as Balcanas pliocaenica may actually belong to this species. More likely, they are an extinct species of Tadorna (if not a distinct genus) due to their Early Pliocene age; the present species is not unequivocally attested from the fossil record until some 2–3 million years later (Late Pliocene/Early Pleistocene).

The common shelduck resembles a small short-necked goose in size and shape. It is a striking bird, with a reddish-pink bill, pink feet, a white body with chestnut patches and a black belly, and a dark green head and neck. The wing coverts are white, the primary remiges black, and the secondaries green (only showing in flight) and chestnut. The underwings are almost entirely white. Sexes are similar, but the female is smaller, with some white facial markings, while the male is particularly crisply coloured in the breeding season, his bill bright red and bearing a prominent knob at the forehead.

Ducklings are white, with black cap, hindneck and wing and back patches. Juveniles are similarly coloured, greyish above and mostly white below, but already have the adult's wing pattern.

The call is a loud honk.

Habitat The species shows a preference for saline habitats and frequents mudflats and muddy or sandy estuaries in coastal regions, and occurs inland on saline and brackish lakes in steppe or semi-desert.  Asiatic populations also occupy freshwater rivers or marshes and other populations utilise freshwater habitats on migration. 

Diet Its diet consists predominantly of salt-water molluscs (e.g. Hydrobia spp.) as well as other aquatic invertebrates (e.g. insects, crustaceans and worms), small fish, fish spawn and plant material (e.g. algae, seeds and agricultural grain)

Breeding site The nest is commonly positioned in a tree-hollow up to 8 m above the ground or in a mammal burrow (e.g. of European rabbit Oryctolagus cuniculus).  Rarely nests may also be placed in the open or in dense vegetation up to 1 km from water. The species will also nest in artificial nest-boxes.