 Reference Base  Notes on breeding black rhinoceroses Diceros bicornis at ... |
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Hays, H.R., 1967. Notes on breeding black rhinoceroses Diceros bicornis at Pittsburgh Zoo. International Zoo Yearbook 7: 164-165
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| Location: |
Captive - North America |
| Subject: |
Reproduction |
| Species: |
Black Rhino |
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Pittsburgh Zoo. The only signs of oestrous appear to be enlargement of the vulva and receptivity to the male's advances. In every case, only one copulation occurred during each oestrous.
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