This book covers 135 nocturnal species in the Aegothelidae, owlet-nightjars (10 species) and the four families of the Caprimulgiformes: Caprimulgidae, nightjars, nighthawks, whip-poor-wills, and Pauraque
(100 species); Podargidae, frogmouths (17 species); Nyctibiidae, potoos (7 species); and Steatornithidae, Oilbird (1 species).
A preference for river habitats was detected for the common pauraque ([chi square] = 6.
DISCUSSION-The nine species of night birds we documented (including two, the common pauraque and elf owl, with restricted ranges within the USA) was greater than in most other parts of the country.
Numbers of lesser nighthawks were twice those of the common pauraque on Galvan Ranch.
We examined habitat preferences (river versus pond) of great horned owls (Bubo virginianus), eastern screech-owls (Megascops asio), elf owls, lesser nighthawks, common poorwills (Phalaenoptilus nuttallii), and common pauraques (Nyctidromus albicollis) by determining presence and absence for each species at each of the 19 sites (evaluated for each species using a two by two chi-square test).
Among the many species named for their vocalizations are the boobook owl, chachalaca, chickadee, chiffchaff, chowchilla, curlew, dickcissel, hoopoe, kiskadee, pauraque
, pipit, towhee, veery, whip-poor-will, willet, and wompoo pigeon.
texana) and provides habitat for a variety of birds, including the buff-bellied hummingbird, pheasant-like chachalaca, green jay, groove-billed ani, and pauraque
bracteatus Nightjars Caprimulgidae Pauraque
Nyctidromus albicollis Blackish Nightjar Caprimulgus nigrescens Swifts Apodidae Grey-rumped Swift Chaetura cinereiventris Hummingbirds Trochilidae White-tipped Sicklebill Eutoxeres aquila Buff-tailed Sicklebill E.