Scarlet Tanager
Piranga olivacea
The scarlet tanager, a mid-sized passerine, is marginally the smallest of the four species of Piranga that breed north of the Mexican border. It can weigh from 23.5 to 38 g (0.83 to 1.34 oz), with an average of 25 g (0.88 oz) during breeding and an average of 35 g (1.2 oz) at the beginning of migration. Scarlet tanagers can range in length from 16 to 19 cm (6.3 to 7.5 in) and from 25 to 30 cm (9.8 to 11.8 in) in wingspan. Adults of both sexes have pale, horn-colored, fairly stout, and smooth-textured bills. Adult males are crimson-red with black wings and tail.
ID text from Wikipedia, CC BY-SA 4.0

Western Tanager
Piranga ludoviciana
Measurements: Length: 6.3–7.5 in (16–19 cm) Weight: 0.8–1.3 oz (24–36 g) Wingspan: 11.5 in (29 cm) Adults have pale, stout pointed bills, yellow underparts, and light wing bars. Adult males have a bright red face and a yellow nape, shoulder, and rump, with black upper back, wings, and tail; in non-breeding plumage, the head has no more than a reddish cast and the body has an olive tinge. Females have a yellow head and are olive on the back, with dark wings and tail. The song of disconnected short phrases suggests an American robin's, but is hoarser and rather monotonous.
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: Scarlet Tanager and Western Tanager.