. Michigan bird life : un elenco di tutte le specie di uccelli conosciute per verificarsi nello Stato insieme con un profilo della loro classificazione e un resoconto della storia della vita di ogni specie, con particolare riferimento al suo rapporto con l'agricoltura ... . – in greggi di grandi dimensioni; inoltre, sembra preferire le acque interne, gli stagni e le acque paludose piuttosto che le acque più grandi frequentatesi dai suoi parenti. Naturallyit può essere supposto che itsfood è decisamente diverso, Buti non sono consapevole che thisha è stato dimostrato. Si diveseasily e rimane sotto watera lungo tempo, e non vi è motivo per cui dovrebbe notfee

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. Michigan bird life : a list of all the bird species known to occur in the State together with an outline of their classification and an account of the life history of each species, with special reference to its relation to agriculture ... . in largecompact flocks; also, it seemsto prefer inland waters, ponds, and marshy streamsrather than the larger openwaters so much frequentedby its relatives. Naturallyit may be supposed that itsfood is decidedly different, butI am not aware that thishas been proved. It diveseasily and stays under watera long time, and there isno reason why it should notfeed precisely as does theBluebill. It arrives from the southsomewhat later than theBlue))ill, pr()]:)ably most oftenbetween March 20 and April 10, in the southern counties. In the fall itgoes south in September and October. It is not known to nest within our limits, but is one of the commonestnesting ducks throughout northern Minnesota, and is not uncommon inNorth Dakota. Mr. Job found a nest June 14, 1898, in the Turtle Moun-tains, with twelve buffy eggs nearly fresh (Auk, XIX, 1G6). The eggs incolor are like those of the Bluebill, and average 2.23 by 1.57 inches. This sj^ccies seems to be much less common in Michigan than any other13. Fig. 22. Ring-necked Duck.)in Baiid, Brewer & Ridgways Water Birds of North.America. (Little, Brown & Co.) 98 MICHIGAN BIRD LIFE. member of the genus. Mr. Swales states (Birds of S. E. ]lich., 1904)I know little of this bird and have not met with it personally at theFlats or on Detroit River, or seen it in any of the duckers cabins. Purdysays taken at Plymouth as a migrant. According to Chas. L. Cassthis species remained at Hillsdale, Michigan, until November 26, 1894.Mr. L. Whitney Watkins has a specimen taken in Jackson county, April18, 1894, and there are two specimens, male and female, in the AgriculturalCollege collection taken at Greenville, Montcalm county. According to the late Percy Selous in June, 1896, a pair of Ring-neckedDucks spent

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• bookidmichiganbird
• bookyear1912