African Chaffinch
Fringilla spodiogenys
The African chaffinch is a medium to large finch that is typically 13.8–18.5 cm (5.4–7.3 in) in length and weighs 21–24 g (0.74–0.85 oz). Males and females have different characteristics. The adult male has a blue-grey head with a small patch of black above the bill on the forehead, and a moss-green mantle (the mantle very distinct from the reddish-brown of Eurasian chaffinch, and also lacking the reddish cheeks of that species); its wings are black with two bold white stripes and white edges to the tertials and secondaries; the tail is blue-grey with white sides.
ID text from Wikipedia, CC BY-SA 4.0
Eurasian Chaffinch
Fringilla coelebs
The Eurasian chaffinch is about 14.5 cm (5.7 in) long, with a wingspan of 24.5–28.5 cm (9.6–11.2 in) and a weight of 18–29 g (0.63–1.02 oz). The adult male of the nominate subspecies has a black forehead and a blue-grey crown, nape and upper mantle. The rump is a light olive-green; the lower mantle and scapulars form a brown saddle. The side of head, throat and breast are a dull rust-red merging to a pale creamy-pink on the belly. The central pair of tail feathers are dark grey with a black shaft streak. Voice: Songs Males typically sing two or three different song types, and there are regional dialects also. The acquisition by the young Eurasian chaffinch of its song was the subject of an influential study by British ethologist William Thorpe.
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: African Chaffinch and Eurasian Chaffinch.