What’s this bird I snapped in Dorset?

QI am new to birdwatching and have a preference for photographing birds. I took a photograph of a distant bird which I can’t identify at Ferrybridge, Portland, Dorset, last summer. Brian Winch

AIt’s a Sky Lark, probably a young bird, judging by the white tips to the feathers on its back, and the hint of some fine white tips on its crown, too. Seen on the ground, they often take birders by surprise, because they’re bigger and chunkier than expected (we get used to seeing them flying at height, pouring out their song). This bird has its crest flattened, too, which might otherwise be a good ID pointer, although that crouched posture is typical of a bird that, once on the ground, tends to be unobtrusive and hard to spot in its typical open habitat.