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“And then there are grey walls on which have been recorded excerpts from the writings of 19th Century naturalists and hunters, describing the almost unbelievable size of Ectopistes migratorius flocks.”
“Zugunruhe" is devoted to the passenger pigeon (Ectopistes migratorius), a bird that once inhabited North America in almost unimaginable numbers, but was wiped out during the 1800's by hunting and deforestation.”
“Passenger pigeon (_Ectopistes_) which at one time was extraordinarily abundant in parts of North America, though it has now been nearly killed out by man.”
“The passenger-pigeon (Ectopistes migratorius) is, or rather was, excessively abundant in a certain area in North America, and its enormous migrating flocks darkening the sky for hours have often been described; yet this bird lays only two eggs.”
“Two of the latter male hybrids paired with their pure parents, viz. _Turtur vulgaris_ and the Ectopistes, and likewise with _T. risoria_ and with _Columba oenas_, and many eggs were produced, but all were barren.”
“MS. report from the Zoological Gardens it is said that hybrids from _Turtur vulgaris_ and _suratensis_, and from _T. vulgaris_ and _Ectopistes migratorius_, were sterile.”
“Of even the American passenger pigeons (_Ectopistes migratoria_), which occur in such numbers in their native country as actually to eclipse, during their migratory flights, the light of day, only a single straggler, -- the one whose chance visit has been recorded by Dr. Fleming, -- seems to have been ever seen in Britain.”
“It has been speculated that frequent long-distance seed dispersal by the passenger pigeon (Ectopistes migratorius) could have been key for the postglacial range expansion of many North American oak species.”
“The passenger, or wild pigeon, _Ectopistes migratorius_.”
“The passenger pigeon, _Ectopistes migratorius_, formerly numerous in”
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