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Systematics and reproductive biology of the white eared pheasant crossoptilon crossoptilon






Milu 5(1-2): 103-116

Systematics and reproductive biology of the white eared pheasant crossoptilon crossoptilon

In 1966, 4 .male.male. and 5 .female.female. white eared pheasants, C. crossoptilon, were imported from China. These eared pheasants are specimens of the Tibetan subspecies, C. c. drouyni. They are compared with specimens of the nominate form. Keeping white eared pheasants is not difficult. In the Berlin [Germany] Tierpark the animals were placed in an aviary of 70 s m2. The 1st eggs were laid on May 30th. In the course of 11 yr the egg laying period was more and more advanced starting now as early as on May 6th. The laying interval was 2 or 3 days, sometimes 4 days, the whole laying period lasting about 2 mo. Eggs of C. c. drouyni are described for the 1st time; measures and weights are given. The eggs of this subspecies are somewhat smaller than those of the nominate form. The incubation period of the white eared pheasants is 24 days. Sex distinction is possible at the age of 3.5 mo. Sexual maturity is usually reached at the age of 2 yr. In some cases hens already lay at the age of 1 yr.

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Accession: 006574505



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