Ornithology Department
 
 

Popular articles

 

De Swardt, D. H. 2017. Letters - Inbox: Rising above it. African BirdLife Sept / Oct 2017: 8.

De Swardt, D. H. & Smith, J. 2016. Raptor "balchatri" ringing training in the Strydenburg area, Northern Cape. Eagles Eye September 2016. p21-22.

De Swardt, D. H. 2016. Garden Watch - Twitter feed. African Birdlife 4: 76.

De Swardt, D. H. 2013. The Egyptian Vulture – a tool using bird.Culna 68: 30 - 31.

De Swardt, D. H. 2013. Interessante waarnemings tydens SABAP2 opnames: Januarie – Julie 2013.Sakabula 45: 9 – 10.

De Swardt, D. H. 2013. Green-winged Pytilia with interesting colour variation ringed at Dedeben reserach Centre on Tswalu Kalahari Reserve.  Diamond Route Newsletter. December 2013: 2.

De Swardt, D. H. 2013. Searching for African Rock Pipits at Tswalu Kalahari.  Diamond Route Newsletter. December 2013: 2.

De Swardt, D. H. 2012. Korannaberg. Sakabula 43: 2-3.

De Swardt, D. H. 2010. Egg-centric Secretarybird nest. Africa Birds & Birding 15: 15.

De Swardt, D. H. 2010. Karoo and Drakensberg Prinias – the difference is in the spots! Culna 65: 15 – 16.

De Swardt, D. H. 2010 Gurney’s Sugarbirds in the Lydenburg area. Environment - People and Conservation in Africa 2: 42 – 45.

De Swardt, D. H. 2009. Willem Pretorius Wildtuin-uitstappie op 17 Oktober 2009. Sakabula 35: 6-7.

De Swardt, D. H. 2008. An unconventional hang–out. Africa Birds & Birding 13:55.

De Swardt, D. H. 2006. Kakelaars en hoep-hoeppe se chemiese oorlogvoering. Culna 61: 12-13.

De Swardt, D. H. 2006. Displaying behaviour of Familiar Chat. Bee-eater 57: 10.

De Swardt, D.H. 2004. Ludwig’s Bustard breeding at Garingboom. Sakabula 18: 10-11.

De Swardt, D.H. 2003. African Rock Pipit behaviour and vocalizations. Culna 58: 28-29.

De Swardt, D.H. 2003. Winter voëls-kyk by Soutpan en Hagesdam. Sakabula 17: 9-10.

Oschadleus, D. & De Swardt, D. H. 2003. Safring News: Malachite Sunbird. Africa Birds & Birding 8(4): 9.

De Swardt, D.H. 2002. Black-headed Canaries at Hagesdam, central Free State. Mirafra 19: 1-2.

De Swardt, D.H. 2002. Nest site selection by breeding birds at Hagesdam, central Free State. Mirafra 19: 60-62.

De Swardt, D.H. 2002. Report on ringing project on Gurney's Sugarbirds at Lydenburg, Mpumalanga. Indaba Inyoni 5(3): 24-25.

Kopij, G., Nuttall, R.J. & De Swardt, D.H. 2002. Diet of Piciformes and Coliiformes in the Free State, South Africa. Mirafra 19: 65-67.

De Swardt, D.H. 2001. Termites in Jackal Buzzard Buteo rufofuscus stomach contents. Mirafra 18(2): 20.

De Swardt, D.H. 2001. Sekretarisvoëls se broeigewoontes. Culna 56: 6-7.

De Swardt, D.H. 2001. 'n Nat maar suksesvolle uitstappie na Maria Moroko Nasionale Park. Sakabula 6: 14-15.

Kopij, G., Nuttall, R.J. & De Swardt, D.H. 2001. Arthropod diet of the Malachite Sunburd Nectarinia famosa in South Africa. Mirafra 18(2): 20-21.

Nuttall, R.J. 2001. Caspian Plovers Charadrius asiaticus in the central Free State, South Africa. Mirafra 18(1): 1-2.

Nuttall, R.J. 2001. Paradise Flycatcher Terpsiphone viridis in semi-arid Kalahari thornveld. Mirafra 18(1): 8-10.

Nuttall, R.J. 2001. Honey Buzzards Pernis apivoris in the Free State: summer 2000/2001. Mirafra 18(1): 16-18.

Nuttall, R.J. 2001. Bennett's Woodpecker Campethera bennettii at Sandveld Nature Reserve, Hoopstad District, Free State. Mirafra 18:27-28.

Nuttall, R.J. 2001. Sightings of interest: Free State & Northern Cape regions. Mirafra 18: 34-36.

Nuttall, R.J. 2001. Sightings of interest: Free State region. Mirafra 19: 8-11.

Nuttall, R.J. 2001. Ring wear in Sociable Weavers Philetairus socius. Afring News 30(2):64-65.

Nuttall, R.J. 2000. Barn Swallow Hirundo rustica ringing in Bloemfontein, South Africa. Safring News 29: 20-24.

Nuttall, R.J. 2000. Further records of European Starlings Sturnus vulgaris in the Bloemfontein district. Mirafra 17(4): 50-52.

Nuttall, R.J. 2000. Vocal mimicry in individual Thick-billed Lark Galerida magnirostris and Yellow-bellied Eremomela Eremomela icteropygialis. Mirafra 17(4):56-57.

Nuttall, R.J. 2000. European Swallow roosts in the Memel district, Free State, South Africa. Mirafra 17(4):57-58.

De Swardt, D.H. 1999. Unusual waterfowl mortalities on a pan near Soutpan, Brandfort district. Mirafra 16: 21-23.

De Swardt, D.H. 1999. Notes on the behaviour of the Sickle-winged Chat Cercomela sinuata in the Free State. Mirafra 16: 38-39.

De Swardt, D. H. & Harebottle, D. 1999. Birds in Reserves Project (BIRP) in the Free State. Mirafra 16: 25-27.

Kopij, G., Nuttall, R.J. & De Swardt, D.H. 1999. Diet of Namaqua Sandgrouse Pterocles namaqua and the Laughing Dove Streptopelia senegalensis in South Africa. Mirafra 16: 36-38.

De Swardt, D.H. 1998. Interesting observations at Soetdoring Nature Reserve, Bloemfontein district. Mirafra 15: 29-30.

De Swardt, D.H. 1998. Bird ringing at Kirklington, Ficksburg. Mirafra 15: 39-41.

De Swardt, D.H. 1998. Rooiborssuikervoëls in Lydenburg. Escarpment Bird Club Newsletter 4: 4.

Kopij, G. & De Swardt, D.H. 1998. An annotated checklist of the birds of Franklin Nature Reserve, Bloemfontein. Mirafra 15: 21-27.

Nuttall, R.J. 1998. Notes on flocking, feeding and breeding activity of Wattled Starlings at Sandveld Nature Reserve. Mirafra 15: 31-32.

Nuttall, R.J. 1998. Sightings of interest - Free State region. Mirafra 15: 32-33.

Nuttall, R.J. 1998. European Swallows roosting in suburban Bloemfontein. Mirafra 15: 37-38.

Nuttall, R.J. 1998. Sightings of interest - Free State region. Mirafra 15: 45-46.

De Swardt, D.H. 1997. Dié voëls is mal oor proteas. Custos September: 14-15.

De Swardt, D.H., Nuttall, R.J. & Botha, A.J. 1997. Report on ringing training workshop held at Qwa Qwa National Park, eastern Free State. Mirafra 14: 2–5.

Nuttall, R.J. 1997. Sightings of interest - Free State region. Mirafra 14(1&2): 21-26.

De Swardt, D.H. 1996. Notes on the breeding of Greybacked Finchlark Eremopterix verticalis. Mirafra 13: 10-11.

De Swardt, D.H. 1996. Jameson's Firefinch Lagonosticta rhodopareia along the Vaal River, Free State Province. Mirafra 13: 67-68.

Kopij, G. & Nuttall, R.J. 1996. Mixed heronries at Sandveld Nature Reserve. Mirafra 13: 11-19.

Nuttall, R. 1996. Pretty Polly, Pretty Polly. Culna 51: 9-10.

Nuttall, R.J. 1996. Sightings of interest - Free State region. Mirafra 13: 20-24.

Nuttall, R.J. 1996. Sightings of interest - Free State region. Mirafra 13: 71-78.

Allan, D. & Nuttall, R. 1995. South Africa - the rainbow country. World Birdwatch 17(1): 10-13.

De Swardt, D.H. 1995. Rare birds of the Free State. Mirafra 12: 6-7.

De Swardt, D.H. 1995. Some observations of birds responding to rain in the Karoo. Mirafra 12: 11.

De Swardt, D.H. 1995. Ten years of sugarbirds in Lydenburg. The Hornbill 41: 32-33.

Nuttall, R.J. 1995. Sightings of interest - Free State region. Mirafra 12: 12-15.

Nuttall, R.J. 1995. Daily movements of Ruffs Philomachus pugnax at Sandveld Nature Reserve, Free State Province, South Africa. Mirafra 12(3&4): 6-8.

Nuttall, R.J. 1995. Large numbers of waterfowl at Bloemhof Dam, Sandveld Nature Reserve, Free State Province. Mirafra 12(3&4): 11-12.

Nuttall, R.J. 1995. Sightings of interest: Free State region. Mirafra 12(3&4): 14-18.

Nuttall, R. 1995. SAOS conservation update. Birding in SA 47: 105.

Nuttall, R.J. 1995. BirdLife International. Birding in SA 47: 46-47.

Nuttall, R.J. 1995. World Birdwatch '95: Report on OFS Ornithological Society activities. Mirafra 12(3&4): 22-23.

Nuttall, R.J. & De Swardt, D.H. 1995. Project Transformation and the future of the SAOS. Mirafra 12: 1-2.

Nuttall, R.J. & De Swardt, D.H. 1995. "Woodpeckers" invade barbet's home. African Wildlife 49(5): 43-45.

De Swardt, D.H. 1994. Bergkoesters in die Lesotho Hooglande en omliggende gebiede. Culna 47: 35-36.

De Swardt, D.H. 1994. Protea subvestita at Qwaqwa National Park. Protea Atlas Newsletter 23: 5.

De Swardt, D.H. 1994. Gurney's Sugarbird observations in the Lowveld. The Hornbill 39: 6.

De Swardt, D.H. 1994. Redbilled Woodhoopoe Phoeniculus purpureus at Maselspoort, Bloemfontein, Orange Free State. Mirafra 11: 51-52.

De Swardt, D.H. 1994. Observations from bird counts in three habitats in the southern OFS. Mirafra 11: 52-55.

Nuttall, R.J. 1994. Sightings of interest - OFS region. Mirafra 11: 17-21.

Nuttall, R.J. 1994. Sightings of interest - OFS region. Mirafra 11: 32-33.

Nuttall, R.J. 1994. Sightings of interest - Free State region. Mirafra 11: 67-68.

Nuttall, R. 1994. The Quail Finch: now you see it, now you don't. Culna 46: 17-19.

Nuttall, R. 1994. 21st BirdLife International World Conference. Birding in SA 46(4): 115-116.

De Swardt, D.H. 1993. The status of Gurney's Sugarbird in the eastern Orange Free State. Mirafra 10: 2-3.

De Swardt, D.H. 1993. European Sedge Warblers at Loch Athlone Bird Sanctuary, Bethlehem. Mirafra 10: 20.

De Swardt, D.H. 1993. Laughing Doves Streptopelia senegalensis breeding on leaf blades of Aloe spectabilis. Mirafra 10: 50-51.

De Swardt, D.H. 1994. Birding Big Day 1994 - wedervaringe van die "Modderbeaters" op 'n warm dag! Mirafra 11: 64-66.

De Swardt, D.H. 1994. Birds in Reserves Project (BIRP). Mirafra 11: 75-76.

Nuttall, R.J. 1993. Vocal imitation of a Sabota Lark Mirafra sabota, with comments on some other species. Mirafra 10: 28-33.

Nuttall, R.J. 1993. Waterbirds: something to CWAC about. Mirafra 10: 58-59.

Nuttall, R.J. 1993. The Lesser Kestrel Falco naumanni in the Orange Free State and Lesotho: 1991-1993. Mirafra 10: 39-45.

Nuttall, R.J. 1993. Sightings of interest - OFS region. Mirafra 10: 56-57.

Nuttall, R.J. 1993. Whitefaced Owl Otus leucotis at Sandveld Nature Reserve, Orange Free State. Mirafra 10: 66-67.

Nuttall, R.J. 1993. Notes on birds breeding at Sandveld Nature Reserve, Orange Free State. Mirafra 10: 68-70.

Nuttall, R.J. 1993. Observations at a small pan near Bultfontein, Orange Free State. Mirafra 10: 71-72.

Nuttall, R.J. 1993. Sightings of interest - OFS region. Mirafra 10: 72-74.

Nuttall, R.J. 1993. Sightings of interest - OFS region. Mirafra 10: 8-9.

Nuttall, R.J. & De Swardt, D.H. 1993. Temminck's Courser Cursorius temminckii breeding near Jagersfontein, Orange Free State. Mirafra 10: 57-58.

Nuttall, R.J., Fairman, S., Segeren, P. & Segeren, S. 1993. Baillon's Crake Porzona pusilla in the eastern and southern Orange Free State. Mirafra 10: 51-52.

De Swardt, D.H. 1992. 'n Ongewone Rooiborssuikervoël-nes. The Hornbill 28: 21-22.

De Swardt, D.H. 1992. Birds at Stentor Estates, Kaapmuiden. The Hornbill 28: 31-32.

De Swardt, D.H. 1992. Birds of the Natal Botanical Gardens. NMBC Newsletter 5: 5.

De Swardt, D.H. 1992. Greenbacked Herons in the Orange Free State. Mirafra 9: 3-4.

De Swardt, D.H. 1992. Olive Sunbird breeding at the Natal Botanical Gardens. Albatross 312: 17-18.

De Swardt, D.H. 1992. Streepkopkanaries "steel" nektar van Aloe maculata. Mirafra 9: 10.

De Swardt, D.H. 1992. Bird ringing at the Oliewenhuis Gardens - an ongoing programme. Mirafra 9: 6-8.

De Swardt, D.H. & Nuttall, R.J. 1992. Recent sightings - OFS Atlas region. Mirafra 9: 46-47.

De Swardt, D.H., Schoeman, S. & Linströhm, A. 1992. New sightings for the Lydenburg area. The Hornbill 30: 26-27.

De Swardt, D.H., Van Niekerk, J. & Kotze, A. 1992. Grey Hornbills in the central-western OFS. Mirafra 9: 41-42.

De Swardt, D.H. & Nuttall, R.J. 1992. SA Bird Atlas Project. Mirafra 9: 11-12.

Nuttall, R.J. 1992. The Lesser Kestrel: an endangered species. Mirafra 9: 50-53.

Nuttall, R.J. 1992. Bird ringing in southern Africa and the UK: a comparison. Mirafra 9: 61-62.

Nuttall, R.J. 1992. Birding Big Day 1992. Mirafra 9: 69-70.

Nuttall, R.J. 1992. Further Grey Hornbill Tockus nasutus sightings: central OFS. Mirafra 9: 44.

Nuttall, R.J. 1992. Some observations of Fawncoloured Lark Mirafra africanoides behaviour. Mirafra 9: 63-64.

Nuttall, R.J. 1992. Sightings of interest - OFS region. Mirafra 9: 68.

Nuttall, R.J. & De Swardt, D.H. 1992. Recent sightings - OFS Atlas region. Mirafra 9: 13.

Sanderson-Smith, I. & Nuttall, R.J. 1992. Birds, powder down and windows. Mirafra 9: 13-15.

De Swardt, D.H. 1991. Palecrowned Cisticola here! Mirafra 8: 25.

De Swardt, D.H. 1991. Barred Warbler now in the south. Mirafra 8: 26-27.

De Swardt, D.H. 1991. Die habitat-voorkeure van Roodeplaatdam Natuurreservaat se voëls. Laniarius 45: 16-18.

De Swardt, D.H. 1991. Notes on the status of the Karoo Lark in the southwestern Orange Free State. Mirafra 8: 52.

De Swardt, D.H. 1991. Jangroentjies in Bloemfontein. Culna 41: 13.

De Swardt, D.H. 1991. Malachite Sunbirds - a request for information. Mirafra 8: 65-66.

De Swardt, D.H. 1991. Ongewone waarnemings - OVS-atlasstreek. Mirafra 8: 67.

De Swardt, D.H. 1991. Regional Reports/Streeksverslae - Orange Free State. SABAP News 11: 1.

De Swardt, D.H. 1991. Regional Reports/Streeksverslae - Orange Free State. SABAP News 12: 6.

De Swardt, D.H. & Bothma, N. 1991. Notes on the nest of Gurney's Sugarbird in the eastern Transvaal. Birding in SA 43: 2-3.

De Swardt, D.H. & Nuttall, R.J. 1991. Some new bird distribution records for the southwestern Orange Free State. Mirafra 8: 66-67.

De Swardt, D.H. & Nuttall, R.J. 1991. African Marsh Warbler Acrocephalus baeticatus recaptured in Botswana. Mirafra 16:1.

Nuttall, R.J. 1991. Birding Big Day 1991 - the tale of three travellers. Mirafra 8: 62-65.

Nuttall, R.J. & De Swardt, D.H. 1991. Lilacbreasted Rollers Coracias caudata in the central and southwestern OFS. Mirafra 8: 45.

Schoeman, S. & De Swardt, D.H. 1991. Spotted Crake in Lydenburg. Laniarius 43: 8.

De Swardt, D.H. 1990. A partial albino Buffy Pipit. Mirafra 7: 69-70.

De Swardt, D.H. 1990. Project Report Back: Three years of ringing Gurney's Sugarbirds. Laniarius 39: 26-28.

De Swardt, D.H. 1990. Spikeheeled Lark breeding at Soetdoring Nature Reserve. Mirafra 7: 107-108.

De Swardt, D.H. 1990. Redheaded Finch breeding in South African Cliff Swallow nest. Mirafra 7: 108-109.

De Swardt, D.H. 1990. Notes on the nests of Wailing Cisticola and Spotted Prinia - and other new records. The Hornbill 22: 32-33.

De Swardt, D.H. 1990. A new non-slip net attachment and lifting apparatus for erecting mist nets. Safring News 19: 45-47.

De Swardt, D.H. 1990. Bontrokkie val 'n laksman ten prooi. Mirafra 7: 49.

De Swardt, D.H. 1990. Is suikervoëls en suikerbekkies verwant? Culna 38: 13-14.

De Swardt, D.H. 1990. Nesrekordkaarte. Mirafra 7: 74-76.

De Swardt, D.H. & Schoeman, S. 1990. Voëlberinging is nie altyd saai nie! The Hornbill 22: 18-19.

De Swardt, D.H. 1989. A possible range expansion of the Karoo Chat? Mirafra 6: 43-44.

De Swardt, D.H. 1989. Observations on a nest of a Secretarybird. Mirafra 6: 112-113.

De Swardt, D.H. 1989. Streakyheaded Canary breeding at Roodeplaat-dam Nature Reserve - a new record. Laniarius 36: 18.

De Swardt, D.H. 1989. Ongewone snaweldeformasie by 'n Rooiborsduif. Mirafra 6: 11.

De Swardt, D.H. 1989. A Wailing Cisticola caught by a Fiscal Shrike. Mirafra 6: 45.

De Swardt, D.H. 1989. Anteating Chats at Lydenburg. The Hornbill 16: 19.

De Swardt, D.H. 1989. Letters to the Editor - Corncrakes. The Hornbill 17: 4.

De Swardt, D.H. & Coetzee, J.J. 1989. Observations of Lesser Flamingoes at Roodeplaat Dam Nature Reserve. Laniarius 37: 10-11.

Earlé‚ R.A. 1989. Hoe om 'n parasiet te wees. Deel 2. Mirafra 6: 24-26.

De Swardt, D.H. 1988. A non-slip device for securing guylines to net poles. Safring News 17: 23.

De Swardt, D.H. 1988. Where to bird from Johannesburg - Roodeplaat-dam Nature Reserve. WBC Newssheet 143: 3-4.

De Swardt, D.H. 1988. Breeding of the Redknobbed Coot at Roodeplaat-dam Nature Reserve. Laniarius 34: 14.

De Swardt, D.H. 1988. Unusual mortalities of the South African Cliff Swallow. Mirafra 5: 4.

Earlé, R.A. 1988. Swartnekdobbertjies. Mirafra 5: 36.

Earlé‚ R.A. 1988. Naguiltjies in my tuin. Mirafra 5: 3.

Earlé‚ R.A. 1988. Voëls van eenderse vere? Mirafra 5: 46-47.

Earlé‚ R.A. 1988. Hoe om 'n parasiet te wees - deel 1. Mirafra 5: 73-74.

Earlé‚ R.A. & Brooke, R.K. 1988. South African Cliff Swallows overwintering near Bloemfontein. Mirafra 5: 53.

Herholdt, J.J. & Earlé, R.A. 1988. Swift predation by the Barn Owl in Bloemfontein. Mirafra 5: 10.

Du Toit, H. 1987. Spioenasiemetodes oopgevlek. Museum Nuus No. 32.

Earlé‚ R.A. 1987. Swaels voed om neonlig. Mirafra 4: 74.

Earlé‚ R.A. 1987. Slange, swaeltjies en ander staaltjies. Museum Nuus No. 32.

Earlé‚ R.A. 1987. Swaeltjies. SABAP News 2: 3-4.

Earlé‚ R.A. & Herholdt, J.J. 1987. Birds ringed in Pellissier and Fichardtpark suburbs, Bloemfontein during June 1986 to June 1987. Mirafra 4: 88-90.

Herholdt, J.J. 1987. Aspects of the breeding biology and social behaviour of the Horus Swift Apus horus. Mirafra 4: 28-32.

Herholdt, J.J. 1987. Some notes on the behaviour of the Ludwig's Bustard Neotis ludwigii in the Orange Free State and northern Cape. Mirafra 4: 34-35.

Herholdt, J.J. 1987. Field notes on the identification of the Botha's Lark, Pinkbilled Lark and Rudd's Lark in the O.F.S., with notes on their habitat. Mirafra 4: 61-62.

Herholdt, J.J. 1987. Some notes on the general behaviour of the Anteating Chat. Mirafra 4: 63-66.

Herholdt, J.J. 1987. Observations on the incubation and nestling period of the Pied Starling Spreo bicolor, with notes on nestling growth. Mirafra 4: 75-77.

Herholdt, J.J. 1987. Bird collecting in the south-western OFS. Mirafra 4: 63.

Herholdt, J.J. & Earlé, R.A. 1987. The occurrence of the Crested Barbet, Steelblue Widowfinch and Whitefronted Bee-eaters in the OFS: a possible range extension? Mirafra 4: 51-59.

Earlé, R.A. 1986. Does intraspecific brood parasitism occur in the Cape Sparrow? Bokmakierie 38: 70.

Earlé‚ R.A. 1986. Gedrag van Gevlekte Ooruile by die nes. Mirafra 3: 5.

Earlé, R.A. 1986. Anteating Chat breeding in a suburb. Mirafra 3: 44.

Earlé‚ R.A. 1986. Reproductive output of an urban pair of Cape Wagtails. Mirafra 3: 44-46.

Herholdt, J.J. 1986. South African Cliff Swallow Hirundo spilodera feeding in association with other birds. Bokmakierie 38: 122.

Earlé, R.A. (ed.) 1986. Where to watch birds in the Orange Free State. Bloemfontein: OFS Ornithological Society.

Earlé‚ R.A. 1986. Differences between swallows and swifts. Custos 14(11): 34.

Earlé‚ R.A. 1986. Mossie en mens. Museum Nuus No. 31.

Earlé‚ R.A. & Du Toit, H. 1985. Die Oranje Vrystaat Voëlatlas. Bokmakierie 37: 127-128.

Earlé, R.A. & Du Toit, H. 1985. Lanner Falcon eating Cattle Egret. Mirafra 3: 5.

Earlé‚ R.A. 1985. Die OVS Voëlatlas Projek. Mirafra 2(2): 6-7.