Projects of the Animal Demography Unit

Colour-ringing of Hadeda Ibis on the Cape Peninsula

Photo Gallery

Res Altwegg and Doug Harebottle
Animal Demography Unit
Hadeda Ibis
Photo Doug Harebottle
An adult Hadeda (with red on the top part of the bill) with two 25 day old chicks on a nest in Rondebosch. This picture shows a typical nest, made up of twigs and small branches.

These chicks were ringed on 7 November 2006 - the colour ring can just be seen on the leg of the chick just to the left of the adult.
Adult Hadeda Ibis
Photo Doug Harebottle
Nests are usually located about 5+ meters up in Pine, Eucalyptus (pictured here) or Willow trees, and are nearly always characterised by a piece of orange twine (like you get from sacks of oranges) extending from the nest.
Adult Hadeda Ibis
Photo Doug Harebottle
Access to nests is rather challenging...but Res's climbing experience ensures that each nest can be reached!.
Adult Hadeda Ibis
Photo Doug Harebottle
Mrs Johanna Carstens, from the farm Brandenburg (near Paarl), holding chick "BB" soon after it was ringed on 14 November 2006. A pair of Hadedas have nested on the farm since 2005. She will be following the movements of chicks "BA" and "BB" once they fledge.
Adult Hadeda Ibis
Photo Doug Harebottle
Some nests are located on islands surrounded by water. Here Res, and Linda Tsipa (also from the ADU), ring chicks at a nest that was built on an artificial platform in one of the ponds at Intaka Island, near Century City.
Adult Hadeda Ibis
Photo Doug Harebottle
Getting to these nests requires either a boat or canoe, or where the water is not that deep... waders!.
Adult Hadeda Ibis
Photo Doug Harebottle
Aerial view of a hadeda nest in a garden in Penhill Estate, Eerste River. The two chicks "BP" and "BS" were ringed on 21 January 2007 and fledged successfully. They have not been resighted since!
Adult Hadeda Ibis
Photo Doug Harebottle
The project often has a strong social focus. A nest in Woodstock where chicks, "CD", "F" and "CH" were ringed on 11 July 2007 had a local businessman, a car guard and a homeless person as 'co-owners' of the nest!
Adult Hadeda Ibis
Photo Doug Harebottle
Local is lekker!

A chick ringed in the Constantia greenbelt on 5 July 2007 carries "CA" as its unique colour code.