Interspecific matings under laboratory conditions are not uncommon and several verbal reports of such matings under natural conditions have reached me. [Please select]
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The young ducks when hatched are yellow or creamy blue and from blue matings there are also produced black and white ducklings. [Please select]
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Since the drakes do not fight seriously, flock matings can be made. [Please select]
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As a rule, matings once made are permanent from year to year unless changed by the breeder on account of poor results. [Please select]
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Matings are not, therefore, changed from year to year as a rule so long as they continue to give satisfactory results. [Please select]
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In wild land birds the pairing habit is not of advantage to a species, but still the tendency to single matings is very strong. [Please select]
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In making matings, the owner would know at once that these two were not to be allowed to mate together, as they would be brother and sister. [Please select]
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