Plate 12- 35. The Yellow- billed Tern in the foreground is
markedly smaller than the Large- billed Tern standing behind
it on this sandbar. Photo by John Kricher.Plate 12- 34. The banana- colored, oversize bill of the Large-
billed Tern makes it easy to recognize. Photo by John Kricher.
Plate 12- 28. The Gray- lined Hawk (Buteo
nitidus), like other raptors, is often seen
perched along a river as it searches for
possible prey. Photo by John Kricher.
Plate 12- 29. Kingfishers, up to six
species of them, are commonly seen
along rivers and streams. This one is a
male Amazon Kingfisher (Chloroceryle
amazona). Photo by John Kricher.Plate 12- 30. Swallows are graceful, sleek
fliers that capture all of their insect food
in the air. This Gray- breasted Martin
(Progne chalybea) is typical of swallows
in flight. Photo by John Kricher.Plate 12- 32. The Southern Rough-
winged Swallow (Stelgidopteryx ruficollis)
is common on most tropical rivers. It
builds a tunnel nest in embankments.
Photo by John Kricher.Plate 12- 31. Like other swallows, the
Gray- breasted Martin often perches in
the open between aerial sorties. This
species is widely distributed and not
confined to riverine areas, though it
is common in such habitats. Photo by
John Kricher.
Plate 12- 33. The White- winged Swallow
(Tachycineta albiventer) is widely
distributed and common throughout
the riverine areas of Amazonia. Photo by
John Kricher.220 chapter 12 cruising the rivers to the sea