Bird ringing at Frogmore Estate/Zandvlei : 9 May 2026
Frogmore Estate is a suburb of Cape Town, a few kilometres north of Muizenberg, and bordering on Zandvlei. The Zandvlei Trust plays a key role in the conservati...
Author: Les Underhill
Prof Les Underhill was Director of the Animal Demography Unit (ADU) at the University of Cape Town from its start in 1991 until he retired. Although citizen science in biology is Les’s passion, his academic background is in mathematical statistics. He was awarded his PhD in abstract multivariate analyses in 1973 at UCT and what he likes to say about his PhD is that he solved a problem that no one has ever had. He soon grasped that this was not the field to which he wanted to devote his life, so he retrained himself as an applied statistician, solving real-world problems.
Bird ringing at Nuwejaars Wetlands SMA : 12 to 16 April 2026
This was our 12th bird ringing expedition to the Nuwejaars Wetlands Special Management Area. We arrived into a wet and windy few days at the end of what had bee...
Bird ringing at Zandvlei, brunch at Marina da Gama : 20 December 2025
Saturday. 20 December. was the Open Day for bird ringing. We had two locations arranged for the ringing, so that there was space for everyone. At sunrise, we di...
Open Day for bird ringing at Grotto Bay Private Nature Reserve : 29 November 2025
There is no record of the number of people who attended the Open Day for bird ringing at Grotto Bay, but it was probably roughly 40, both residents and visitors...
Bird ringing at Zandvlei, brunch at Marina da Gama : 20 December 2025
Ringers, plus family and friends, trainees and would-be trainees are invited to the end-of-year event on Saturday 20 December 2025. We will be bird ringing at Z...
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African Oystercatcher monitoring on Robben Island : 2025 to 2026
Introduction We have been monitoring the breeding of the African Oystercatchers Haematopos moquini on Robben Island since the summer of 2001/02. We have also mo...
Connecting to nature via bird ringing : Nuwejaars Wetlands : 2 to 7 November 2025
“How do we get people interested in the environment?” “How do people get connected to nature?” This gallery of photos, taken at the Nuwe...
Bird ringing at Ouberg : 14 to 17 February 2025
There is no pollution from city light. We are deep in the countryside. There is no moon. The night is dark. Above our heads, the Southern Cross and The Pointers...
Bird ringing at Ouberg : 21 to 24 October 2025
The Ouberg Private Nature Reserve is 20 km northeast of the town of Montagu in the Western Cape. It is in the foothills of big mountains. Three biomes meet here...
Open Day for bird ringing : Grotto Bay [originally planned for 15 November 2025, but postponed to] 29 November 2025
The BDI is holding an Open Day for bird ringing at Grotto Bay on Saturday, 29 November 2025 15 November 2025. We will be hosted by the local community at Grotto...