Eyton's Whistling Duck (Dendrocygna eytoni)

A beautiful specie of another Whistling Duck.

Shag (Phalacrocorax aristotelis)

Shags are goose-sized dark long-necked birds similar to cormorants but smaller and generally slimmer with a characteristic steep forehead. In the breeding season adults develop a dark glossy green plumage and prominent recurved crest on the front of their head. In the UK they breed on coastal sites, mainly in the north and west, and over half their population is found at fewer than 10 sites, making them an Amber List species. Shags usually stay within 100-200km of their breeding grounds. (RSPB)

Avocet (Recurvirostra avosetta)

A lovely looking bird.

Muscovy Duck ((Cairina moschata)

The Muscovy Duck (Cairina moschata) is a large duck native to Mexico, Central, and South America. Small wild and feral breeding populations have established themselves in the United States, particularly in the lower Rio Grande Valley of Texas, as well as in many other parts of North America, including southern Canada. Feral Muscovy Ducks are found in New Zealand and have also been reported in parts of Europe.

They are a large duck, with the males measuring about 76 cm in length, and weighing up to 15 pounds. Females are considerably smaller, and only grow to 7 pounds, roughly half the males' size. The bird is predominantly black and white, with the back feathers being iridescent and glossy in males, while the females are more drab. The amount of white on the neck and head is variable, as well as the bill, which can be yellow, pink, black, or any mixture of these. They may have white patches or bars on the wings, which become more noticeable during flight. Both sexes have pink or red wattles around the bill, those of the male being larger and more brightly colored. (Wikipedia)

Goldeneye (Bucephala clangula) Slimbridge WWT

I've a few from Slimbridge that I give you. 
A medium sized diving duck. Males look black and white with a greenish black head and a circular white patch in front of the yellow eye. Females are smaller, and are mottled grey with a chocolate brown head. In flight, birds show a large area of white on the inner wing. First nested in Scotland in 1970, and since then birds have been attracted to nest in specially designed boxes put up on trees close to water. In winter, birds from Northern Europe visit the UK. (RSPB)