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Latest News

Progress with 2016 atlasing in Hessequa by Johan Van Rooyen

Sensational September for SABAP2

The power of citizen science: spinning dials in October

Six million records in the SABAP2 database

SABAP2 at 70% in South Africa, Lesotho and Swaziland

Northern Cape reaches 40% – congratulations to all involved

Only 99 left! Claim yours now

SABAP2 priotrities: October to December 2014

2014 could easily be SABAP2's best year for data collection!

Greater Kruger National Park Challenge – 2014 – the mid-year progress report says "Outstanding"

Two-thirds coverage in 2014 of the Four Degrees of Greater Gauteng reached on 5 July

DAY 1 of YEAR 8 of SABAP2

UCT planned maintenance this weekend: 09h00 Saturday 21 June – 17h00 Sunday 22 June

Colour Rings on Swift Terns

SABAP2 doing awesomely in 2014; today we celebrate the milestone of a "MiniProject"

There is one thing that SABAP2 does better than any similar project, anywhere on this planet

You are awesome, Team SABAP2. You have made 20000 checklists for the Western Cape

Citizen Science Week : Saturday 8 March to Sunday 16 March

SABAP2 up to the end of February, 2014

SABAP2 at the end of the first half of February 2014

One hundred thousand checklists in the SABAP2 database: awesome milestone, well done, Team

Be part of the "Kruger Green Team"

These Four Degrees are on the cusp of a lot of milestones

Increasing in abundance, but not in range – Dark-capped Bulbul

How did we get along in the first half of November?

SABAP1 vs SABAP2: the Rock Dove aka Feral Pigeon

How to submit records to the Virtual Museums

SABAP2 strides ahead in October

Five million records

Project progress, first half of October

THIS COUNTDOWN CLOCK IS NOW BELOW 100

September progress with SABAP2

Intergovernmental Panel on Climate Change report released

Barberspan conference 28 November – 3 December 2013

Weaver Wednesday [66]: Sao Tome Weaver

Weaver Wednesday [65]: Black-necked Weaver

Sappi TREE TUESDAY, and today we are featuring the Knobbly Creeper

Today is Sappi TREE TUESDAY! The Weeping Sage Buddleja auriculata

Weaver Wednesday: Village Weaver

Public Lecture Wednesday 18 September "The metamorphosis of the butterfly atlas"

2000 up on Facebook

"Citizens who advance science"

This part of South Africa is especially important for annual coverage!

SpringMAP 2013

Weaver Wednesday: Cinnamon Weaver

Bring the trumpets out of the cupboard! Sound the fanfare

Virtual Museum records

Twenty years of CWACing the Bot River Estuary

Atlas bash to Loeriesfontein, Northern Cape, 8-11 August 2013

Save the date: 20-21 July 2013, SABAP2 workshop, Port Elizabeth

Weaver Wednesday [65]: Black-necked Weaver

gravit8 Weaver Wednesday

birdpix 1412

The Black-necked Weaver Ploceus nigricollis is similar to the Spectacled Weaver P. ocularis, having a golden head with a narrow black mask through the eye, and a black bib in the male. Birds from Cameroon to Kenya are easily distinguished from the Spectacled Weaver by black upperparts, wings and tail in both sexes; thefemale and juvenile have a diagnostic yellow line between the black crown and mask. Birds in West Africa have green upperparts and differ from Spectacled Weavers in having a green (not yellow) crown, themale has a heavy chestnut wash around the black part, and the female has a yellow line between the crown and mask and a brown eye.

The Black-necked Weaver is found from West to eastern Africa. Three subspecies are recognised (see map left, based on Birds of Africa): P. n. nigricollis, black-backed, in central Africa (see red on map). Black-necked Weaver map
P. n. brachypterus, green-backed, in West Africa, including Bioko Island (see green on map). Birds from Bioko may be an additional race (po) having a longer and heavier bill, but further study is needed.
P. n. melanoxanthus, black-backed, in East Africa (see blue on map). The male resembles the nominate subspecies but the forehead and crown are golden yellow.
birdpix 1412

The Black-necked Weaver inhabits woodland, ranging from savanna to gallery forest, forest clearings and edges, gardens, oil palm, cocoa and coffee plantations, and mangroves, and occasionally in eucalypt plantations. Pairs remain together all year. It is not usually gregarious but small groups may forage together during the dry season, and may roost in groups.

The Black-necked Weaver is mainly insectivorous, feeding on grasshoppers, caterpillars, beetles, ants, bugs, termite and ant alates. It also feeds on seeds, spiders, berries, fruit and nectar. In one study in Ivory Coast, diet was estimated as 60% arthropods, 20% fruit and 10% seeds. It sometimes joins mixed-species flocks of insectivores around clearings, gleaning the vegetation for insects. It usually feeds within 2 m of the ground, but may feed in the canopy.

phown 5070

The Black-necked Weaver is solitary and monogamous, probably having a permanent pair bond, but polygyny has been recorded. The male defends the immediate vicinity of the nest. There are usually solitary nests or, where several nests are together, only one is occupied. One colony had 30 pairs in oil palm near Libreville, Gabon.

The nest is retort-shaped with the entrance tunnel short or up to 20 cm long but narrower than the tunnel of the Spectacled Weaver. The nest is woven of grass, or in more forested areas, vine stems or tendrils of creepers. It is not tightly woven and often unlined, so that the eggs are visible from outside, but nests are usually well hidden (in contrast to the more exposed nests of Spectacled Weavers). phown 5070 The nest is usually built in the centre of thick trees but in Uganda may be attached to elephant grass. On Bioko nests in coconut palms are built near wasp nests. Two eggs are laid, and they are blue to whitish, with fine red speckles.

The Black-necked Weaver has 1 PHOWN record (see PHOWN summary) and many are needed. Also look out for old nests which may be used for breeding by Dusky-blue Flycatchers Muscicapa comitata and occasionally by Bronze Mannikins Spermestes cucullata. Submit any weaver nest records to PHOWN (PHOtos of Weaver Nests) via the Virtual Museum upload site.


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