...Nesting birds spendmuch more time in the South than migrants, and during the weeks whenthe old birds are feeding young they are almost incessantly engagedin the pursuit of insects... 
William T. Hornaday 「Our Vanishing Wild Life」
...They are among the latestof the migrants to reach ourborders and arrive in theMiddle States about the latterpart of May, when theyare quite common...
Chester A. Reed 「The Bird Book」
...At different hours of the day I was a visitor, andthere I heard the first spring migrants on theirarrival—chiff-chaff, willow wren, cuckoo, redstart,blackcap, white-throat...
W. H. Hudson 「Birds and Man」
...This species is a summer visitor in Buenos Ayres, and is one of the lastto arrive and first to depart of our migrants...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...This beautiful Warbler was formerly considered one ofour rarer migrants, but of recent years it appears to beincreasing in numbers...
Frank M. Chapman 「What Bird is That?」
...They areamong the last migrants to come north in the spring and among thefirst to leave in the autumn because insects don't hatch out in coolweather, and the birds must always be sure of plenty to eat...
Neltje Blanchan 「Birds Every Child Should Know」
...All these birds were possibly autumnal migrants, but the datesare early; the species has not previously been recorded on migrationin México before August (Mexican Check-list, 1950:101)...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...North American migrants in the state of Veracruz, Mexico: a summary...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...We can best realize the perfection of this instinct when we consider that all these migrants...
W. H. Hudson 「Birds in Town and Village」
...A few years of note-taking will put one in possession ofthe approximate dates of arrival of all our common vernal migrants...
Bradford Torrey 「The Foot-path Way」
...Along with the other migrants come numbers of rooks andjackdaws...
Douglas Dewar 「A Bird Calendar for Northern India」
...cineraceus) "common in the conifers and oaks of the upper levels of the mountains [Sierra del Carmen], at 6500 to 7000 feet, as winter visitants or migrants...
Emil K. Urban 「Birds from Coahuila, Mexico」
...Miller (1955a:174) found a few as migrants in the Sierra del Carmen on April 27...
Emil K. Urban 「Birds from Coahuila, Mexico」
...) recorded migrants ofP...
Emil K. Urban 「Birds from Coahuila, Mexico」
...Miller (1955a:175) noted several migrants "each day in the last week of April ...
Emil K. Urban 「Birds from Coahuila, Mexico」
...Probably,however, these summer migrants are ashappy as most of their class...
Frederick G. Aflalo 「Birds in the Calendar」
...Many persons have contributed field observations such as dates ofarrival and departure for migrants, and the various activities of thebreeding cycle for most of the species here discussed...
Richard F. Johnston 「The Breeding Birds of Kansas」
...west-southwest of Sisal; specimens taken there may have been migrants...
Erwin E. Klaas 「Summer Birds From the Yucatan Peninsula」
...The greater number of the migrants proceed along the north shore ofthe bay to Little River and are there confronted with a choice ofvarious further routes...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...Only data from mice caught four or more times were used because theseindividuals probably had home ranges in the study area, whereas those caughtfewer than four times may have been migrants...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
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