Most authorities still treat Andean Teal as a sub-species of Speckled Teal A. flavirostris however, I find the arguments for treating it as a full species as stated by the South American Classification Committee quite convincing. One of the principal differences is the bill colour with A. flavirostris having a yellow bill and A. andium having a dark bill. As noted in the SACC article, there are other plumage differences.

It is distributed in the Andes of Venezuela, Colombia and northern Ecuador. See the distribution map at Birdlife International.

It is found at altitude on ponds, lakes and wet bogs at between 2,600 and 4,300 metres.

The subspecies A. a. altipetens seen in photos 1 to 3 is sometimes known as Mérida Teal.

Photo 4 from Ecuador shows the nominate sub-species