Little Grebe

I recently saw little grebes in Keoladeo NP in India. They were a long distance from me and my photos are poor. In June 2022 I saw little grebes in the Tagus Estuary of Portugal which were also a long distance from me and my photos are poor. There are seven subspecies of little grebe. Those I saw in Portugal were the nominate ssp. ruficollis, which are found from Europe to western Asia and northern Africa. The little grebes I saw in Portugal are not migratory. Those I saw in India were ssp. albescens, found in southern and central Asia, including India. The central Asian little grebes are migratory and the south Asian birds are not. 

In summer or breeding plumage, it is dark above with a rufous color neck, cheeks and flanks and a yellow gape (the area connecting the upper and lower half of the bill). In non-breeding and juvenile birds, brownish gray replaces the rufous coloring. Juvenile birds have a yellow bill with a small black tip, black and white streaks on the cheeks and sides of the neck, and the bill gradually turns to black in adulthood. 

This and the next photo were taken in India. 

Note that the three on the right are adolescents with yellow bills and brownish gray plumage. 

This and the next photo were taken in Portugal. 

Illustration of ssp. rufiollis from Birds of the World. 

Range from Birds of the World.