Description American redstart

american redstart of quintana, texas

the american redstart smallish warbler. measures 11 14 cm (4.3 5.5 in) in total length , has wingspan of 16 23 cm (6.3 9.1 in). length boosted relatively long tail , 1 of lightest birds in family. weight considerably less in winter in summer. males weigh average of 8.6 g (0.30 oz) in summer drop 7.2 g (0.25 oz) in winter, while females drop more average of 8.7 g (0.31 oz) average of 6.9 g (0.24 oz). among standard measurements, wing chord 5.5 6.9 cm (2.2 2.7 in), tail 4.9 5.8 cm (1.9 2.3 in), bill 0.7 0.9 cm (0.28 0.35 in) , tarsus 1.5 1.9 cm (0.59 0.75 in). breeding males unmistakable, jet black above apart large orange-red patches on wings , tails. breast sides orange, rest of underparts colored white. in other plumages, american redstarts display green in upperparts, along black central tails , grey heads. orange patches of breeding males replaced yellow in plumages of females , young birds. orange , yellow coloration due presence of carotenoids; males possess red carotenoid canthaxanthin , yellow carotenoids canary xanthophyll , b, of mix produce orange color, while females possess yellow carotenoids. recent research indicates age , sex effect on observed color attributes of hue, brightness, , saturation exists in american redstarts, exception saturation, showed age effect. song series of musical see notes. call soft chip.

male american redstart