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2014-09-17 Les Underhill 
ADU page in African Birdlife, September–October 2014

ADU page in African Birdlife, September-October 2014

This topic was chosen because Citizen Science Week is from 20–28 September. We would be delighted if atlasers atlased irresponsibly.

This page is from the September-October issue of African Birdlife, the magazine of BirdLife South Africa. The pdf of this page is available here.

 
2014-07-18 Dieter Oschadleus 
Weaver nests with long entrance tubes

phown 5189 phown 1028 phown 5320 phown 11499 phown 5338 phown 8416

Several weaver species regularly build nests with long entrance tubes, although some individual nests have shorter tubes:
Baya Weaver phown 7442
Black-throated Weaver
Nelicourvi Weaver
Dark-backed Weaver
Black-necked Weaver
Spectacled Weaver
Gola Malimbe
Cassin's Malimbe
Red-bellied Malimbe
Ibadan Malimbe
Rachel's Malimbe
Red-vented Malimbe
Red-headed Weaver

Often long tubed nests are built by solitary, monogamous weavers. This group of weavers usually consists of a pair and they build the nest together. In some malimbes, a group of birds help build a nest. The long tube probably reduces predation but does not stop some predators. In the polygnous weavers it is usually the male that builds (although the female lines an accepted nest) and males want to build many nests in a breeding season, rather than spending energy on building nests with long tubes.

Thanks to the observers who submitted these records! Please record and submit your record of weaver nests to PHOWN (PHOtos of Weaver Nests) via the Virtual Museum upload site.  

2014-06-26 Dieter Oschadleus 
Trip to the Upper Karoo, 24 May-6 June 2014

phown 11322 ReptileMAP 150980 OdonataMAP 10433 FrogMAP 2221 SpiderMAP 1974 ScorpionMAP 534 LepiMAP 47954 MammalMAP 10219 ViTH 3355 BirdPix 8267

This trip was under-taken to survey Sociable Weaver nests in the Northern Cape and other species using their nests, by Barry and Sue Schultz and myself. At the same time Virtual Museum records were collected for all but two projects (Birds with Odd Plumages, and Atlas of African Echinoderma) - submit any project photos you have at Virtual Museum upload site.

The planned survey area was farms and untarred roads in the area bounded by Williston, Carnarvon, and slightly north of Vanwyksvlei and Brandvlei. A punctured tire, however, meant a trip to Upington and resulted in continuing the survey in that area.
Read about Sociable Weaver colony in a time series.

Acknowledgements
Thanks to the great hospitality of the farmers who hosted us!


The University of Turku, Finland via Robert Thomson provided most of the funding for the project.


The last morning was the coldest, with frost and ice
 

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© Animal Demography Unit 2014
Department of Biological Sciences - University of Cape Town

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