...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」
...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?」
...In summer they merely hide away in the woods to nest,for they are not migrants...
Neltje Blanchan 「Birds Every Child Should Know」
...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」
...Twelvesupposed migrants seen along Laguna Chila (Cacalilao), Veracruz,by Coffey (1960:291) on May 31, 1957, may have been summeringbirds...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...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」
...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」
...Besides these regular migrants there are many species whichspend a few days or weeks in the plains, leaving the Himalayaswhen the weather there becomes very inclement...
Douglas Dewar 「A Bird Calendar for Northern India」
...Migrants of the eastern flyway as well as migrants associated with western North America pass through this section of Coahuila...
Emil K. Urban 「Birds from Coahuila, Mexico」
...Representatives of the Gulf Coastal Plain in Tamaulipas and Nuevo León as well as migrants of the eastern flyway occur in northeastern Coahuila...
Emil K. Urban 「Birds from Coahuila, Mexico」
...cineraceuscommon in the Sierra del Carmen; on April 3, 5, and 10 the birds were "abundant, as though a wave of migrants were passing through...
Emil K. Urban 「Birds from Coahuila, Mexico」
...Amadon and Phillips (1947:579) reported that Orchard Orioles were common in the desert "about Las Delicias" in August and September and probably were migrants...
Emil K. Urban 「Birds from Coahuila, Mexico」
...This wedge formation of flight over land andsea is not only peculiar to these waterfowl,but is not apparently adopted by any otherlong distance migrants...
Frederick G. Aflalo 「Birds in the Calendar」
...The otherfive species, however, show fair consistency and their peak ofegg-laying almost coincides with peaks for aerial foragers, woodlandspecies, and migrants, considered elsewhere in this section...
Richard F. Johnston 「The Breeding Birds of Kansas」
...The peak of nestingessentially coincides with that characteristic of migrants...
Richard F. Johnston 「The Breeding Birds of Kansas」
...Almost all such species are migrants, but many migrantshave different temporal characteristics, and the categories thus areshown to be discrete on the basis of temperature at time of breeding...
Richard F. Johnston 「The Breeding Birds of Kansas」
...Most individuals seen in the Stateare passage migrants...
Richard F. Johnston 「The Breeding Birds of Kansas」
...After these migrants, which travel from the centre of the tree to thesurface, we will mention some others which from the surface plungeinto the interior...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...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」
...An interesting division of migrants is that of the casual travellers,like the men and women who always remain at home except when specialbusiness calls them away...
Royal Dixon 「The Human Side of Animals」
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