Known from the discs' own bird lists
Stygian Owl
asio stygius
Strigidae
- Disc 2 · 2001 listed
- Disc 3 · 2006 listed
- Disc 1 · 2011 listed
The detailed account of this bird below comes from Disc 1 · 2011. The other discs list the bird but carry no account of it, and none is invented here.
From the original Disc 1 · 2011 revision
Detailed account — Disc 1 · 2011
This detailed account first appears in the 2011 Disc 1 revision; the earlier releases have no account for this bird.
Description Disc 1 · 2011
38-46 cm. A large dark owl with prominent eartufts; forehead whitish; facial veil black; upperparts black-brown barred and mottled buff; underparts dirty buff, heavily streaked and spotted dark brown; iris orange yellow; black bill; feet naked.
The immature upperparts are sooty black, mottled white and buff; underside buff, heavily spotted and streaked sooty.
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The disc records this picture against the bird without a caption. Disc 1 · 2011
The account, continued
Voice Disc 1 · 2011
Single deep call "buh"; the female calls also with a cat like short "mia".
Behavior Disc 1 · 2011
Nocturnal. Hunts from a perch in the forest.
Habitat and status Disc 1 · 2011
Rare, maybe frequently overlooked in rain forest, dry forest, Araucaria dominatedf forest, restinga, city parks.
Distribution Disc 1 · 2011
Throughout. In Estado São Paulo recorded from Altinopolis, São Carlos (119).
The Disc 2 · 2001 contains no detailed account for this bird (its 2011 account is shown above). None is invented here.
The Disc 3 · 2006 contains no detailed account for this bird (its 2011 account is shown above). None is invented here.
Vocalizations
Each disc's own recording entries are shown under that disc's label. A player appears only where the recording's file survives on a preserved disc.
Disc 1 · 2011
Macaulay 106352 Disc 1 · 2011
Macaulay 127432 Disc 1 · 2011
Which discs list this bird
- Disc 2 · 2001 — in this disc's bird list
- Disc 3 · 2006 — in this disc's bird list
- Disc 1 · 2011 — in this disc's bird list
How that was established
- Disc 2 · 2001
aux_nonzero- Disc 3 · 2006
aux_nonzero- Disc 1 · 2011
aux_nonzero
The disc's own record fields that place the bird on its list: a non-empty entry in the species table, and the byte that marks it as selected on a local checklist.
Historical checklist participation
Disc 2 · 2001
Listed on product/edition lists: SEBRAZIL.CKD; SEBZ_D1.CKD
Disc 3 · 2006
Listed on product/edition lists: SEBZ_D1.CKD; Sebrazil.ckd
Disc 1 · 2011
Listed on product/edition lists: SEBZ_D1.CKD; Sebrazil.ckd