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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
 
2014-06-20 Les Underhill 
UCT planned maintenance this weekend: 09h00 Saturday 21 June – 17h00 Sunday 22 June

No ADU websites this weekendThe entire UCT network is going to be shut down for the weekend, from 09h00 tomorrow morning, Saturday 21 June, to 17h00 on Sunday afternoon. Because the ADU's network is inside the UCT system, this means that there is not going be access to any of the ADU's websites, including SABAP2 and the Virtual Museums during this period.

There is a planned UCT network "maintenance slot" once a month on a Sunday towards the end of every month and these often don't impact us, but this one will. Information Services at UCT says "The extended maintenance slot will enable us to perform routine and preventative maintenance and tests on electrical equipment." In general, all the ADU and all its projects are brilliantly served by UCT's computer systems, and the amount of UCT downtime is minimal. So although the interruption is going to be irritating, in the long term it generates a more or less continuous service.

So this is going to be a weekend for collecting data, and holding it until Sunday evening before submitting it.

 

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

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