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Cape Weavers and Hadedas breeding at Die Oog

2019-05-20 (839)
phown record
Cape Weaver colony at Die Oog
phown record
Male Cape Weaver in colony at Die Oog
Cape Weavers have been nesting in a row of poplar trees at Die Oog, Bergvliet, Cape Town, for at least 2 decades, and probably quite a bit longer. The total number of nests is usually counted when the weaver colony is counted, although visits in early years were few and not always at the peak of breeding. For the last 6 years many visits were made through the year, each time counting the total number of nests in the poplars. The maximum number of nests per year is loosely correlated with breeding success. Some nests are also built in the willows, on the island and in the reeds, but these nests are not included as the nests are usually built by immature males and not used by females for breeding.

In many of these years a pair of Hadedas has also nested in the poplars near the weaver nests. Hadedas and Cape Weavers often nest together, and it may be that this increases the vigilance against predators. Hadedas sometimes manage to repel avian predators like crows and raptors although sometimes the predators are successful. Thus Hadedas could help reduce predation on the weaver nests.

A pair of Hadedas bred in the poplars with the weavers in 2013-2015 but not in more recent years. Interestingly the number of weaver nests has decreased in the last few years, suggesting that the presence of Hadedas previously did help the Cape Weavers. In 2015 there was also a small colony of Reed Cormorants in the poplars. Read about the nesting association of the weavers, Hadeda, and cormaorants at this site in Biodiversity Observations.

See colony record in PHOWN (PHOtos of Weaver Nests) at Die Oog colony.

Blue line - highest nest count for Cape Weaver per year
Red boxes - Hadedas bred in poplars

All news items relating to this species

The headers below refer to Weaver News items featuring this species. Click on a header to see the News item, which includes the full news item. (The number in brackets is the date that the news item appeared on Weaver Watch).

Cape Weavers and Hadedas breeding at Die Oog (2019-05-20)
Weaver Wednesday 3 [247] - Range changes [10]: Cape Weaver (2017-03-08)
Camping at Kardoesie, 25-27 March 2016 (2016-03-28)
Cape Weaver survey on Robben Island, 2-4 Oct 2015 (2015-10-13)
Robben Island survey of weaver colonies, 2014 (2014-11-09)
Weaver Wednesday [123] - Discovery [6]: Cape Weaver (2014-10-22)
PAPER: Cape Sparrows using Cape Weaver nests (2014-09-15)
PAPER: Lovebirds and weavers (2014-08-18)
NEWSPAPER: Citizen science in the Cape Times (2013-08-19)
Cape Weaver colony in Plettenburg Bay (2013-02-12)
Weaver Wednesday [32]: Cape Weaver (2013-01-23)
Out-of-range Cape Weavers (2012-12-14)
BOOK: Earliest reference to identifiable weaver in Africa (2012-11-26)
Palm trees and weavers (2012-09-25)
Blog: Cape Weavers in Plett (2012-07-24)
Early nesting in weavers (2012-06-29)
Off-setting your carbon footprint (2012-04-25)
Ringing and PHOWNing in Hopefield (2012-02-26)
Cape Weaver returns to natal colony (2011-10-24)
The next PHOWN call: repeats! (2011-08-12)
Robben Island survey of weaver colonies (2010-10-29)
PHOWN at the Stanford Bird Fair (2010-10-02)
A century of PHOWN records (2010-09-24)
PAPER: Cape Weaver parasites (2010-03-29)
Cape Weaver movements on the Cape Peninsula (2010-03-09)
Movement of a Cape Weaver chick (2009-10-14)
Talk: Any Cape Weavers home? (2009-05-31)
Longevity record for Cape Weaver (2009-05-12)