Ground-Tyrants (again)

Last year I posted several times pictures of Ground-Tyrants. They are not always easy to indentify. Here I post pictures of two species from Moho at the shores of Lake Titicaca. It makes it easy to compare these two species. The pictures are taken 1-3.09.08

Rufous-naped Ground-Tyrant
White-browed Ground-Tyrant
Rufous-naped Ground-Tyrant
White-browed Ground-Tyrant