Same individual as XC302248 This is the best cut obtained after a repositioning numerous times. This bird first vocalized at about 1810h, when the forest was still light, but did not vocalize again until 1940h, well after full dark. Thereafter, it vocalized at 40-90 minute intervals until at least 2355h, and probably all night long. The bird did not sing again after dawn. Whistled imitations were given prior to 2200h; these did not appear to affect the vocal behavior whatsoever. The first song, given in daylight, truncated the descending series to about six notes; this is consistent with a vocalization heard at this same location in daylight at 0740h in December. All other vocalizations, given under full darkness, involved series of similar length and quality to this cut. In one vocalization, given at 1940h, the bird gave one of the highest notes of the song as a doublet, similar to several high notes in XC7085 from Venezuela. Otherwise all songs were similar.

The bird was relatively stationary during this singing bout, singing from a small ravine with an understory dominated by Lepidocaryum tenue (Irapay Palm) at the edge of tall white sands forest. A Crypturellus variegatus sang repeatedly (at considerably shorter intervals) from a position not more than 30 meters from the C. casiquiare. These singing tinamous did not appear to react or respond to one another. This song was given (by coincidence, I think) was given immediately (within 2 seconds) after the variegatus finished a song. Unlike in many varillales on the Alto Nanay, Crypturellus duidae was absent here; the forest was taller and the soil drier than at sites preferred by duidae in the Nanay basin. Tinamus guttatus was syntopic with C. casiquiare and C. variegatus here, and was also vocal throughout the night. Tinamus major and Crypturellus soui were present but not necessarily syntopic, and were also vocal throughout the night. Of the five species of Tinamou present, C. casiquiare was by far the least vocal during daylight hours.

Due to equipment failures, it was recorded through the inbuilt microphone on a Sony ICD linear recorder, and transferred to a TASCAM DR-07 via speakers and the TASCAM's inbuilt microphone (this reduced some insect noise, a happy side effect of Sony's terrible compatibility).

Recorded while taping Nothocrax urumutum well after dark. Strongly filtered because original recording is saturated with insect noise.

Same individual as XC302267 This is the second best cut obtained after a repositioning numerous times. This bird first vocalized at about 1810h, when the forest was still light, but did not vocalize again until 1940h, well after full dark. Thereafter, it vocalized at 40-90 minute intervals until at least 2355h, and probably all night long. The bird did not sing again after dawn. Whistled imitations were given prior to 2200h; these did not appear to affect the vocal behavior whatsoever. The first song, given in daylight, truncated the descending series to about six notes; this is consistent with a vocalization heard at this same location in daylight at 0740h in December. All other vocalizations, given under full darkness, involved series of similar length and quality to this cut. In one vocalization, given at 1940h, the bird gave one of the highest notes of the song as a doublet, similar to several high notes in XC7085 from Venezuela. Otherwise all songs were similar.

The bird was relatively stationary during this singing bout, singing from a small ravine with an understory dominated by Lepidocaryum tenue (Irapay Palm) at the edge of tall white sands forest. A Crypturellus variegatus sang repeatedly (at considerably shorter intervals) from a position not more than 30 meters from the C. casiquiare. These singing tinamous did not appear to react or respond to one another, though one of the casiquiare's songs (by coincidence, I think) was given immediately after the variegatus finished a song. Unlike in many varillales on the Alto Nanay, Crypturellus duidae was absent here; the forest was taller and the soil drier than at sites preferred by duidae in the Nanay basin. Tinamus guttatus was syntopic with C. casiquiare and C. variegatus here, and was also vocal throughout the night. Tinamus major and Crypturellus soui were present but not necessarily syntopic, and were also vocal throughout the night. Of the five species of Tinamou present, C. casiquiare was by far the least vocal during daylight hours.

Due to equipment failures, it was recorded through the inbuilt microphone on a Sony ICD linear recorder, and transferred to a TASCAM DR-07 via speakers and the TASCAM's inbuilt microphone (this reduced some insect noise, a happy side effect of Sony's terrible compatibility).