"No, that was a pigeon, not an eagle".
I saw this lark whilst out walking in a very dry area covered in spiky shrubs. It was hovering in the air, with fast wingbeats whilst singing a fast and loud song. I saw Thekla's larks in the same place today, but this bird wasn't making the caracteristic 'pu-pu--puii' call of a TH. L, and I have never seen one hovering, so I'm not sure what it is. Any ideas?