| Popis: |
Summary Evidence of the inter-breeding of grey-bellied Zosterops (atmorii) and green-bellied (virens) at King William's Town, C.P. is presented. In habitat, behaviour, voice, and breeding biology no differences can be found between them. The roosting and flocking habits are discussed. Whereas both lay blue eggs, only the green-belly (virens) has so far been found to lay white eggs. Incubation periods, ascertained to within a few hours, are mostly between 10 and 11 days. Details are given of the nestling and post-nestling periods. Both insects and fruit are taken and fed to young. Z. pallida on the Orange River is very similar in habits. There is a noticeable difference in tonal quality of voice but the general patterns of the calls are the same. |
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