The most remarkable sight was at dusk, when thousands of guacharo flew out into the night, screaming overhead in a frantic flurry of wings and unholy noise.    From Wordnik.com.  [Black Magic] Reference

The guacharo builds a solid nest like a cheese with a concave top.    From Wordnik.com.  [The Minds and Manners of Wild Animals A Book of Personal Observations] Reference

The guacharo quits the cavern at nightfall, especially when the moon shines.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

The plumage of the guacharo is of a dark bluish grey, mixed with small streaks and specks of black.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

A comparison of the beaks of the guacharo and the goatsucker serves to denote how much their habits must differ.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

Our Alpine crow builds its nest near the top of Mount Libanus, in subterranean caverns, nearly like the guacharo.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

Tom's advice was so sound that I led the way farther into the cave, where we made the place echo, as if about to fall upon our heads, as we had a couple of shots, each bringing down six of the guacharo birds.    From Wordnik.com.  [The Golden Magnet] Reference

When the crops and gizzards of the young birds are opened in the cavern, they are found to contain all sorts of hard and dry fruits, which furnish, under the singular name of guacharo seed (semilla del guacharo), a very celebrated remedy against intermittent fevers.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

A vast cavern in the Valley of Caripe, which was many years ago visited by Baron Humboldt, who found it inhabited by a remarkable species of nocturnal bird, called the guacharo.    From Wordnik.com.  [The Mines and its Wonders] Reference

A little agility took us to the mouth of the rift; and now, candle in hand, we could see the passage through which we had travelled so laboriously, to find it the easiest of any crevice we had traversed, the floor being deeply covered with guano, as was the case with the bird-chamber when we entered it, at last, to find a vast hall of irregular shape, swarming with the guacharo, or butter-bird of South.    From Wordnik.com.  [The Golden Magnet] Reference

The guacharo is of the size of our fowls.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1] Reference

No roosting guacharo.    From Wordnik.com.  [Black Magic] Reference