Crane species in Namibia

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					Crane species in Namibia



      Blue crane (Anthropoides paradiseus)

       Wattled crane (Grus carunculatus)

    Grey crowned crane (Balearica regulorum)
Grey crowned crane

Distribution and abundance - overall

•   Occurs from southern Uganda and Kenya southwards to the eastern Cape
•   Balearica regulorum regulorum found only in southern Africa and southern
    Angola, population estimated at 2800 – 12000 birds
•   Largely associated with wetlands but also forages in nearby dryland habitats
•   Utilises the grass fringes of wetlands, feeding on frogs, reptiles, insects and
    also seed heads and grass tops
•   Three discrete and fragmented populations, largest of about 2800 birds found
    in E and NE South Africa
•   Overall decline of 20% in last three generations
•   Begins egglaying in spring with a peak in December – January (South Africa);
    December – February (Zimbabwe)
•   Threats include poisoning, wetland degradation and disturbance
Regional distribution – Grey crowned crane
Grey crowned crane


In Namibia:

•   Utilises the grass fringes of wetlands, feeding on frogs, reptiles, insects and
    also seed heads and grass tops

•   In Namibia only in grasslands N of Etosha, Zambezi and Okavango Rivers,
    rarely seen in Etosha:
          - this population estimated at < 50 birds in late 80s
          - recorded mainly at Lake Oponono (6 records between 1994 and 1999)

•   No breeding records in Namibia
No of birds recorded in Wetland counts: Grey crowned crane

                          Lake Oponono

                        Aug 91*     3       Oshituntu

                        Apr 93*     5      Jan 96   8
                                           Apr 98   3
                        Jan 94      5
                                           Jan 99   5
                        Apr 94     15
                                           Jan 00   5
                        Jul 97     11

                        Apr 98      2

                        Mar 99     16




                                                             Fischer’s Pan
                                                             Apr 94     2
                                                             Feb 96     1




 * Includes Oshituntu
Distribution of Grey crowned crane in relation to protected areas and
                           conservancies




                                        Grey crowned crane SABAP reporting rate
                                             1-3%
                                             4-7%
                                             8 - 13 %
                                             14 - 20 %
                                             21 - 33 %
                                             Communal conservancies
                                             Commercial conservancies
                                             Protected areas
                     Museum specimens

For Blue crane and Wattled crane, museum specimens are
within the current ranges of these species.

For Grey crowned crane, the 1970 specimen is further north than
this species is now found, indicating a range reduction.



                   1970
                                      1970
                            1963                1970
                               1963
                     1987                       Blue crane
                                                Crowned crane
                                                Wattled crane
Distribution of Grey crowned crane in relation to human population




                                      Grey crowned crane SABAP reporting rate
                                           1-3%
                                           4-7%
                                           8 - 13 %
                                           14 - 20 %
                                           21 - 33 %
                                           Communal conservancies
                                           Commercial conservancies
                                           Protected areas


                                      No of people / km2
                                           0.01-0.5
                                           0.51-1.0
                                           1-5
                                           10-25
                                           25-50
                                           5-10
                                           50-100
                                           > 100
Distribution of Grey crowned crane in relation to livestock




                                   Grey crowned crane SABAP reporting rate
                                        1-3%
                                        4-7%
                                        8 - 13 %
                                        14 - 20 %
                                        21 - 33 %
                                        Communal conservancies
                                        Commercial conservancies
                                        Protected areas



                                    S toc ki n g d e n si ty ( kg /h e cta r e)
                                            0- 2 0
                                            21 - 4 0
                                            41 - 6 0
                                            61 - 8 0
                                            81 - 1 0 0
                                            10 1 - 1 2 0
                                            > 120
  Grey crowned crane
Red Data status – Near Threatened in Namibia,
                   – population stable/decreasing

Threats
• Generally, degradation of feeding and breeding habitat, poisoning, collisions with
   powerlines.
• In Namibia, human use of Lake Oponono by opportunistic hunters and trappers
   with cattle

Actions
• Research on populations elsewhere in Namibia
• Assessment of breeding after good rains
• Direct protection
• Education of herdsmen on importance of Lake Oponono, and on the collection of
   snares and baits
                    This presentation was compiled
                    using information and data from:


 The Atlas of Southern African Birds (Ed. Harrison et al, 1997)

 Avifaunal Database of Namibia, held at the Directorate of Environmental Affairs, MET

 Atlas of Namibia – A Portrait of the Land and its People (Mendelsohn et al, 2002)

 An environmental profile and atlas of Caprivi (Mendelsohn et al, 1997)

 Draft text from the Red Data Book on birds of Namibia (Simmons, in prep)

				
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posted:10/4/2012
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