Cactus Wren
Campylorhynchus brunneicapillus
The cactus wren is the largest wren in the United States. It is between 18 and 19 cm (7.1 and 7.5 in) long, and weighs between 33.4 and 46.9 g (1.18 and 1.65 oz), with an average of 38.9 g (1.37 oz). It has a thick, heavy bill that is dull black, curves slightly downwards, and is about the same length as the head. The lower mandible is grayish and pale, and the tail is long and rounded. The cactus wren's coloration is brown with white speckles. The crown is chocolate-brown with a light red tinge. Voice: The main call of the cactus wren is a harsh and raspy series of jar-jar-jar, or char, notes, which increase in volume and pitch as the song goes on. Each part of the call lasts around four seconds, with four to eight seconds between calls; calls can carry up to 300 metres (1,000 ft). Cornell University ornithologists described it as sounding "like a car that just won't start".
ID text from Wikipedia, CC BY-SA 4.0
Rufous-backed Wren
Campylorhynchus capistratus
The adult rufous-backed wren is 17 cm (6.7 in) long and weighs 29 to 42 g (1.0 to 1.5 oz). There is some variation among the subspecies but generally they have a black crown and eyestripe separated by a white supercilium, a rufous nape, and cinnamon to chestnut upperparts streaked with black and white, especially on the rump. The wings and tail are barred with black and grayish-white. The underparts are white. Young birds have duller upperparts and buff underparts. Voice: The rufous-backed wren's songs vary somewhat among subspecies but the basic structure is "melodic, pure-tone syllables with multiple frequency changes combined into phrases." An example from Costa Rica is . One from Mexico is . Its calls have great variety even within each subspecies; examples include , , and .
ID text from Wikipedia, CC BY-SA 4.0
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