The Calandra Lark is one of the most abundant species in this area. This bird is large and stocky with about 18 to 20 cm length. The black collar may be more or less visible, and sometimes we only see two black patches on the neck sides. The bill is strong. This bird is sedentary in its range in Spain, and it nests on the ground, among the tall grasses.
I don't know if these displays were courtship or defensive behaviours. Both birds chased each other with aggressive attitude, but sometimes, displays are the same according to the moment!