Corn Bunting
Emberiza calandra
This is an unusual bunting because the plumages of the sexes are similar in appearance, though the male is approximately 20% larger than the female. This large bulky bunting is 16–19 cm long, with a conspicuously dark eye and yellowish mandibles. Males lack any showy colours, especially on the head, which is otherwise typical of genus Emberiza. Both sexes look something like larks, being streaked grey-brown above with whitish underparts. The underparts are streaked over the flanks and breast, and the streaking forms gorget around the throat.
ID text from Wikipedia, CC BY-SA 4.0

Yellowhammer
Emberiza citrinella
The yellowhammer is a large bunting, 16–16.5 cm (6.3–6.5 in) long, with a 23–29.5 cm (9.1–11.6 in) wingspan; it weighs 20–36.5 g (0.71–1.29 oz). The male of the nominate subspecies E. c. citrinella has a bright yellow head, heavily streaked brown back, rufous rump, yellow under parts, and white outer tail feathers. The female is less brightly coloured, and more streaked on the crown, breast, and flanks. Both sexes are less strongly marked outside the breeding season, when the dark fringes on new feathers obscure the yellow plumage. Voice: The song of the cock yellowhammer is a series of short notes, gradually increasing in volume and followed by one or two more protracted notes. It is often represented as "A little bit of bread and no cheese", and the full version can be confused with the almost identical song of the pine bunting. If the final notes are omitted, confusion with the cirl bunting is possible.
ID text from Wikipedia, CC BY-SA 4.0

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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Corn Bunting and Yellowhammer.