Red-backed Fairywren
Malurus melanocephalus
The smallest member of the genus Malurus, the red-backed fairywren measures 11.5 centimetres (4.5 in) and weighs 5–10 g (0.18–0.35 oz), averaging around 8 g (0.28 oz). The tail is approximately 6 centimetres (2.4 in) long and is black in the breeding male, and brown in eclipse males, females, and juvenile birds. Averaging 8.6 mm (0.3 in), the bill is relatively long, narrow, pointed, and wider at the base. Wider than it is deep, the bill is similar in shape to those of other birds that feed by probing or picking insects off of their environs. Voice: The typical song used by the red-backed fairywren to advertise its territory is similar to that of other fairywrens, namely a reel made up of an introductory note followed by repeated short segments of song, starting weak and soft and ending high and shrill with several syllables. The call is mostly made by the male during mating season.
ID text from Wikipedia, CC BY-SA 4.0
Superb Fairywren
Malurus cyaneus
The superb fairywren is 14 cm (5+1⁄2 in) long and weighs 8–13 g (0.28–0.46 oz), with males on average slightly larger than females. The average tail length is 5.9 cm (2+1⁄3 in), among the shortest in the genus. Averaging 9 mm (0.4 in) in subspecies cyaneus and 8 mm (0.3 in) in subspecies cyanochlamys, the bill is relatively long, narrow and pointed and wider at the base. Wider than it is deep, the bill is similar in shape to those of other birds that feed by probing for or picking insects off their environs. Voice: Vocal communication among superb fairywrens is used primarily for communication between birds in a social group and for advertising and mobbing, or defending a territory. The basic, or Type I, song is a 1–4 second high-pitched reel consisting of 10–20 short elements per second; it is sung by both males and females.
ID text from Wikipedia, CC BY-SA 4.0
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