Cape Crow
Corvus capensis
Voice: The voice is described as a krrah.....krrah.....krrah or a quicker kah-kah-kah. It also makes very loud, liquid bubbling sounds that carry quite a distance; it also gives throaty chuckles. Some evidence indicates that vocal mimicry is practised, too.
ID text from Wikipedia, CC BY-SA 4.0
Chihuahuan Raven
Corvus cryptoleucus
The proportions resemble the common raven with a heavy bill, but is about the same size as a carrion crow, or slightly larger than the American crow (44–51 cm (17–20 in) long). The plumage is all-black with a rich purple-blue gloss in good light. Like the forest raven, little raven, fan-tailed raven and Australian raven, it is one of the smaller raven species. Voice: The voice is similar to that of the common raven with "pruk-pruk" sounds and other croaks at slightly higher pitches. Like all corvids, the Chihuahuan raven is capable of vocal mimicry. However, this behavior is mostly recorded in captivity and rarely in the wild.
ID text from Wikipedia, CC BY-SA 4.0
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