期刊名称：Afring News: The Journal of the South African Bird Ringing Unit (Formerly: Safring News)
印刷版ISSN：0379-878X
电子版ISSN：0379-878X
出版年度：2004
卷号：33
期号：2
出版社：South African Bird Ringing Unit
摘要：The first Yellow-billed hornbill was caught
in 1949. Since then, 470 individuals have
been caught, ringed and released. The current
SAFRING database includes 375 computerised
records. From Figure 1 it can be
assumed that from 1949 until 1986, the trapping
of Southern Yellow-billed Hornbills
might have been accidental in nature.
However, it would appear as if these
hornbills have been the topic of speciesspecific
projects since ever-increasing
numbers have been caught since 1986, including
the spike of nearly 70 individuals
caught and ringed in 1969. In total, 57
ringers have contributed towards this database.
