Silver Teal

Identification

The silver teal is a striking dabbling duck with distinctive markings that make it relatively easy to identify in the field. Males display a bold black cap that extends below the eyes, combined with a bluish bill tipped in yellow. Both sexes exhibit a green speculum (the coloured patch on the wing) bordered in white, which is visible in flight. Females are somewhat duller in overall plumage than males and show less yellow at the base of the bill, though they retain the same basic pattern. Two subspecies exist: the northern silver teal found in Paraguay, southern Bolivia, and southern Brazil, and the southern silver teal inhabiting southern Chile, Argentina, and the Falkland Islands.

Range & Habitat

The silver teal's range is confined to South America, spanning a wide latitudinal distribution from southern Bolivia and Paraguay in the north to the Falkland Islands and South Georgia in the far south. Its breeding grounds extend across southern Brazil, Argentina, Chile, and Uruguay. The southernmost populations are migratory, moving northward to southern Brazil during winter months, while other populations may be more sedentary.

This species is a freshwater duck, preferring to live on freshwater bodies in small groups rather than larger congregations. During the breeding season from April to June, silver teals show a particular preference for reed beds, where they establish territories and build nests for egg-laying.

Behaviour & Diet

Silver teals are generally placid ducks with calm temperaments, though this changes when they are defending eggs, young, or females—at which point they become noticeably protective. Pairs may form long-term bonds, and both parents cooperate in rearing the ducklings, a trait they share with swans and geese.

The silver teal's diet consists primarily of vegetable matter, with seeds and aquatic plants forming the bulk of their food intake. They forage by dabbling at the water's surface, typical of their genus. Breeding females lay clutches of 6 to 10 creamy-pink eggs, which incubate for 25 to 27 days before hatching.

Best Time & Places to See It

The optimal time to observe silver teals is during the breeding season from April to June, when they are territorial and more visibly active in reed beds. For northern populations, southern Brazil, Paraguay, and southern Bolivia offer the best viewing opportunities. In the south, Chile, Argentina, and the Falkland Islands are prime locations, particularly for the southern subspecies. The remote and subantarctic regions of South Georgia and the South Sandwich Islands also host populations, though these are less accessible to most travellers.

Photography Tips

Photograph silver teals during early morning or late afternoon light when they are most active and when the sun is lower, bringing out the iridescence of their green speculum and highlighting the contrast of their black caps. The striking facial markings and bill coloration are key features to capture, so position yourself to get clear side-on shots of the head. In flight, focus on capturing the white-bordered green speculum, which is most visible during takeoff or landing. Since they often live in small groups on freshwater bodies, approach slowly and use reeds as natural cover to avoid flushing the birds before you have obtained your shots.