Weaver news

Ringing expedition to Fynbos Estate, 18-28 February 2019

2019-03-08 (834)


birdpix
Common Fiscal - female (L) with white eyestripe
male (R) no eyestripe
Ten days were spent at Fynbos Estate to ring birds, as a BDI expedition. The ringers were Dieter Oschadleus and Manuel Puertas (Spain), assisted by trainees Samantha McCarren (Germany), Emmanuel Adekola (Nigeria), and Joel Radue. Les Underhill and Pete Laver helped with logistics and promotion (helped remotely by Megan Loftie-Eaton). On two mornings the Tygerberg ringers (Margaret McCall and Lee Silks with their tranees) kindly let us join their ringing at two farms, Goedeontmoeting and Rocklands.

A total of 375 birds of 27 species were caught at Fynbos Estate, including 31 recaptures of birds caught on earlier days, oe in May 2018. The most ringed species was the Cape Weaver, and the most recaptures were of the Cape Robin-chat. Migrants caught included Barn Swallow and African Paradise Flycatcher. Other exciting captures included Lesser Honeyguide, and its host - Acacia Pied Barbet.

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Cape Weaver moulting

At the two farms, and additional ten species were caught by our group. At Goedeontmoeting a female Southern Masked Weaver (ring BH60921) was recaptured 8.6 years after it was ringed.

Moult analysis. We ringed many Cape Weavers at Fynbos Estate. Moult score was calculated (some birds were not scored due to high catch rate), with an average score of 48.1 (n=49). This was compared to Cape Weavers caught in Cape Town wetlands in February over years 2015-2018, giving an average moult score of 41.9 (n=16).

Thus rural weavers (at Fynbos) seem to have advanced moult scores due to starting moult earlier, and also completing breeding earlier, than urban weavers in Cape Town. Although small sample sizes, this illustrates the potential for ringing studies. A variety of projects are planned for on-going expeditions to Fynbos Estate.

See more photos and text about the ringing location and birds from this amazing expedition.

Table. Species ringed and recaptured during the 10 day expedition

No. Species Fynbos
ringed
Fynbos
retrapped
Goedeontmoeting
ringed
Goedeontmoeting
retrapped
Rocklands
ringed
Rocklands
retrapped
385 Little Swift 3
392 Red-faced Mousebird 2
397 Malachite Kingfisher 4
432 Pied Barbet 2
442 Lesser Honeyguide 1
463 Large-billed Lark 1
488 Red-capped Lark 2
493 Barn Swallow 3 9
543 Cape Bulbul 9 1
581 Cape Robin-chat 14 11
583 Karoo Robin 1 1
606 African Reed Warbler 5 1
609 Little Rush Warbler 1
622 Bar-throated Apalis 4 3
646 Levaillant's Cisticola 2 1 1
665 Fiscal Flycatcher 6 1
672 Cape Batis 1
682 African Paradise Flycatcher 2
686 Cape Wagtail 1 1
707 Fiscal Shrike 5 1
709 Southern Boubou 3
733 Common Starling 1
760 Southern Double-collared Sunbird 5 1
784 House Sparrow 3
786 Cape Sparrow 11 2
799 Cape Weaver 167 3 10 2
803 Southern Masked Weaver 32 3 49 3
808 Southern Red Bishop 13 11 7
810 Yellow Bishop 17 4 1 1 1
843 Common Waxbill 11
857 Cape Canary 1
863 Bully Canary 3
866 Yellow Canary 1
867 Streaky-headed Canary 5 1
1105 Olive Thrush 6
1172 Cape White-eye 14 1
4139 Karoo Prinia 8 3 1
TOTALS 344 31 106 6 17 1

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Acacia Pied Barbet and Lesser Honeyguide
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Manuel with his first bird in Africa
a Fiscal Flycatcher