It is actually a very trusting and social animal, I often see them in the outskirts of the city center. It is typical to see them with capybaras, and I suppose also with oxen since in spanish their name is associated with this last one.
I used to confuse it with the Great kiskadee, I thought that's what they looked like before they changed feathers or something. Or that they were the females of the same species, then I managed to realize this mistake when I identified both species.
[Name]
Cattle Tyrant
[Scientific name]
Machetornis rixosa (Family Tyrannidae)
In spanish we call it "Picabuey".
[General data]:
I find no difference between male and female, but I have a feeling that this bird captured in photos was a young bird.
They are almost always seen on the ground, have a grayish head with brownish dorsal parts, yellow neck and underparts, with long legs and thin black beak.