Northern Red Bishop
Euplectes franciscanus
This short-tailed bishop is small in size, about 11 cm and weighing about 12-22 grams. The striking red-orange feathers are produced by pigments derived from compounds in their diet. Specifically, the yellow, orange, and red pigments originate from compounds called carotenoids, which are very diet-dependent. Lutein and two red fractions (R1 and R2) derived from lutein are the two dominating carotenoids that contribute to the bird's pigment in the wild. Northern red bishops held in captivity lack the R2 red fraction carotenoid from their diet.
ID text from Wikipedia, CC BY-SA 4.0
Yellow-mantled Widowbird
Euplectes macroura
Males are larger than females and acquire longer tails and striking black and golden yellow plumages in the breeding season. The mantle colour is either golden yellow, or in the case of the northeastern race, E. m. macrocercus, black. The yellow shoulders persist in all male plumages, whether breeding or non-breeding.
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: Northern Red Bishop and Yellow-mantled Widowbird.