...And, close by, the greyimmemorial church, with its churchyard, its grandold yew-tree, and, overhead, the bunch of swifts,rushing with jubilant screams round the square tower... 
W. H. Hudson 「Birds and Man」
...Wood-Swallowsand Swifts do not belong to the Swallow family...
John Albert Leach 「An Australian Bird Book」
...When the baby swifts are old enough to climb out of the lattice, theystill cling near it for about a fortnight waiting for their wings togrow strong, before they try to leave the chimney...
Neltje Blanchan 「Birds Every Child Should Know」
...Color, in Goatsuckers, mixedbrown, buff and black; in Swifts, black and white; in Hummingbirds,usually shining green above with resplendent throat-patches of variedhues...
Frank M. Chapman 「Color Key to North American Birds」
...,Parrots, Cuckoos, Trogons, Kingfishers, Woodpeckers, Goatsuckers, Swifts,Hummingbirds, Cotingas, Flycatchers, Larks, Crows and Jays, Blackbirds andOrioles...
Frank M. Chapman 「Color Key to North American Birds」
...Above the earth, the air is peopled by swifts and swallows in the daytime, and by goatsuckers at night...
W. H. Hudson 「Birds in Town and Village」
...The recollection of this seaside gathering raises anew in my mind thequestion why, if swallows and swifts migrate exclusively in the daytime,we so rarely see anything of them on the passage...
Bradford Torrey 「The Foot-path Way」
...At thisseason swifts are very noisy...
Douglas Dewar 「A Bird Calendar for Northern India」
...Overhead, swifts and swallows dash joyously to and fro, feastingon the minute flying things that are found in the air even onthe coolest days...
Douglas Dewar 「A Bird Calendar for Northern India」
...Only one specimen secured, out of two or three of these swifts that wereflying about over the Ituri River, in company with several examples ofChætura cassini...
James Chapin 「Descriptions of Three New Birds from the Belgian Congo」
...Several White-throated Swifts were seen flying overhead at Pico de Jimulco on April 5...
Emil K. Urban 「Birds from Coahuila, Mexico」
...They arenot, however, exclusive in their fraternization; as they hunt insociety with their relatives the Swifts and Swallows, and evenaccompany them in distant flights...
Rev. C. A. Johns 「British Birds in their Haunts」
...Several times bothin spring and fall I have seen swifts gather inimmense numbers toward nightfall, to take refugein large unused chimney-stacks...
John Burroughs 「Bird Stories from Burroughs」
...The Swifts, though of especial interest, are not verynumerously represented in the collection...
A. F. R. Wollaston 「Pygmies and Papuans」
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