Herman van Niekerk – författare
Visar alla böcker från författaren Herman van Niekerk. Handla med fri frakt och snabb leverans.
6 produkter
Bird Colours Unravelled
E-bok, 2021
61 kr
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Understanding bird colours is an interesting and fascinating subject, but very complex. The main reason for this is that the colours that the human eye perceives, are actually reflected or refracted light waves; the reflected light waves according to one of two different colour systems. To …
Colour Blindness Breakthrough
E-bok, 2021
55 kr
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A major scientific breakthrough happens about once in every 100 years.It juat happened in the fields of colour blindness and color deficiency in humans. It is unbelievable that since the discovery and report of colour blindness in 1793 by John Dalton (then referred to as Daltonism), and the …
How to Breed Cage Birds for Colour
E-bok, 2021
44 kr
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Breeding birds is a popular pasttime for enjoyment, new discoveries, challenges, friendships and even an income. Large amounts of money is spent on acquiring breeding stock and caring for the birds in the aviaries. Literally thousands of books, guides and manuals have been written on the …
Sappi Birds of South Africa Enhanced Edition
Av Herman van Niekerk, Saartjie Kidson
Häftad, 2024
280 kr
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Embrace the spirit of exploration, connect with nature, and elevate your birdwatching adventures with the new enhanced edition of Sappi Birds of South Africa.
Spotter's guide: Birds of the Lowveld
Av Saartjie Kidson, Herman van Niekerk
2011
4,0 utav 5 stjärnor. Totalt antal röster: (1)
183 kr
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Bird watching, especially by enthusiastic novices, is presently one of the fastest growing pastimes in the world. It offers healthy relaxation and exercise with the added benefit to enhance the bird watcher's knowledge about nature and to contribute to our scientific knowledge. The Lowveld of South …
