In northern Mauritania, close to the border with Western Sahara, I found a bunch of these larks. Because of the uniform grey-brown mantle, I think it is either a desert lark or a bar-tailed lark. My best guess is the latter, because of:
- Size and colour of the bill
- Ruddy coloured tertials (dark grey-brownish with desert lark)
- Streaks on the breast not very obvious
- Environment (flat desert with sand and pebbles)
But this is could also be a typical bill for a desert lark, and the streaks on the breast might just as well be too clear for a bar-tailed lark. I do think the dark tips on the tail are too diffuse for a bar-tailed lark?
- Size and colour of the bill
- Ruddy coloured tertials (dark grey-brownish with desert lark)
- Streaks on the breast not very obvious
- Environment (flat desert with sand and pebbles)
But this is could also be a typical bill for a desert lark, and the streaks on the breast might just as well be too clear for a bar-tailed lark. I do think the dark tips on the tail are too diffuse for a bar-tailed lark?