Category Archives: Algemeen

FAQ: Combinations of alleles of the same gene

FAQ: Combinations of alleles of the same gene are indicated by writing the mutant names one after the other, for example PastelIno. A capital is used to indicate the start of each mutants name.

But how do we write the name of a combination with epistatic genes?

Well here we have an  easy answer: exactly the same as we write alleles of the same gene! The mutant (gene) names one after the other. Why? It are also two (different) alleles that are creating a (non wild type) phenotype.

Wilt u op de hoogte gehouden worden over onze cursussen?


Visitors in 2019

This year we had a total of 197.361 visitors – from 141 countries – on our website (stats 1th of January till 28th of December 2019)

These countries are in the top 20:

Belgium 31656
Netherlands 23667
Indonesia 21051
Philippines 16143
Pakistan 15897
India 13566
United States 10653
South Africa 6048
Spain 4179
Portugal 3591
Germany 3387
Italy 2982
France 2787
Singapore 2628
Brazil 2481
United Kingdom 2388
Thailand 2298
Australia 2229
Egypt 1956
Canada 1593

Thank you all for your visits and support!

Standaardeisen Agapornis fischeri ge-updated

De standaardeisen van Agapornis fischeri zijn uitgebreid met een tweede deel dat enkel de combinaties met opaline bevat. Verder werden in deel 1 nog een paar mutanten toegevoegd.

Meer info:

Agapornis fischeri blue2

The last months we received several reports from breeders who bred blue2 Agapornis fischeri which develop a yellow / pinkish forehead. We suspect that this (as I mentioned in my article about blue and blue2), can confirm our thesis that blue2 types probably still have the possibility to produce (a limited amount of) psittacin.
The link between * sapphire * and blue2 becomes also more likely. Hopefully we will be able to prove or counterprove this theory in the future by DNA analyses.

zebra finches [Taeniopygia guttata]

To conduct an experiment with zebra finches [Taeniopygia guttata] in captivity, we are looking for  zebra finches that are almost completely orange, almost completely black or almost completely white. If possible from breeders in Spain or Portugal.

Who can help?


Can parrots synthesize pheomelanine in feathers?

Can parrots synthesize pheomelanine in feathers? That is a point of discussion in aviculture for a long time.

We have not heard of any scientific study that confirms the presence of pheomelanin in the feathers of parrots. So it was still doubtful for some breeders.

In MUTAVI, we examined in the past several mutations in Psittaciformes by cross sections and never found visual pheomelanine in the feathers, but it is always possible that there are small pigments that could not be detect under the microscope.

The best way to investigate this is by Raman spectroscopy. Raman spectroscopy is commonly used in chemistry to provide a structural fingerprint by which molecules can be identified. So a perfect method to identify pheomelanin in feathers since it can detect / analyse the smallest pigments in feathers. We could not do this test, but we found a scientist who was willing to help us.

  • Daniel Nuijten (Nature preservation – Belgium)
  • Bert Van Gils (Chairman BVP Belgian Parrot Society – Master of Bioscience Engineering – Belgium)
  • Nico Rosseel (Aviculturist – Belgium)
  • Jef Kenis (Avicultural judge – Aviculturist – Belgium)
  • Eric Gennissen (Aviculturist – The Netherlands)
  • OFM Heinz Schnitker (Taxonomist – Germany)
  • Glenn Ooms (Editor BVA-International – Belgium)


selected 30 species / sub species (from the three super families in Psittaciformes: Psittacoidea, Cacatuoidea, and Strigopoidea) and a few colourmutations in which we have feathers with colours that are POSSIBLE candidates to be produced by pheomelanin (dull orange or chestnut).  All these feathers are analysed now by Raman spectroscopy and there is NO SIGNAL OF PHEOMELANIN IN ANY SPECIES.

We hope to publish these results in detail in a scientific journal. We will keep you informed.

Thanks to all who provided us feathers of these species and our sponsor who helped us to pay this research



‘Red’ Agapornis fischeri

Benjamin aka Joven of Aby Aviary from the Philippines and the South-African breeder Willie Matthews, reported success ful breeding records with ‘red’ Agapornis fischeri.

It looks like these red phenotypes have an autosomal recessive inheritance. Willie Matthews confirmed that this bloodline is NOT related to the ‘red’ birds that are born out of the fallow bloodlines. The birds are complettely orange red and are in very good health. Willie already has severall red youngsters.

Who can help?

We are looking for feathers of GREY Forpus coelestis. If possible tail feathers. Who can help?

Please contact us through our contactpage.

Thanks in advance.

Nouveau club indépendant d’Agapornis en France affiliés au BVA

Il y a un nouveau club affiliés au BVA-International en France:
Association des Éleveurs et Passionnés d’Agapornis Francophones

Les inscriptions pour le nouveau club indépendant d’Agapornis affiliés au BVA sont ouvertes.

Mitogenome of Agapornis personatus, Agapornis lilianae and Agapornis nigrigenis

In March 2019, the study on the mitochondrial genome of Agapornis fischeri was published by H. Liu [1]. Three weeks ago, three new papers, were published on line by Chen and reported the complete mitogenome of Agapornis personatus, Agapornis lilianae and Agapornis nigrigenis [2]–[4]. The phylogenetic analysis suggested that these three species are (as suspected) closely related to Agapornis roseicollis.

[1]          H. Liu, K. Jin, en L. Li, “The complete mitochondrial genome of the Fischer’s Lovebird Agapornis fischeri (Psittaciformes: Psittacidae)”, Mitochondrial DNA Part B, vol. 4, nr. 1, pp. 1217–1218, jan. 2019.
[2]          Y.-X. Chen, S.-L. Hou, Y.-W. Zhou, en Y.-L. Huang, “Characterization of the complete mitochondrial genome of Agapornis personatus and its phylogenetic analysis”, Mitochondrial DNA Part B, vol. 4, nr. 2, pp. 3772–3773, jul. 2019.
[3]          Y.-X. Chen, Y.-L. Huang, J.-Q. Liu, Y.-W. Zhou, en S.-L. Hou, “Characterization and phylogenetic relationship of the complete mitochondrial genome of Black-cheeked Lovebird, Agapornis Nigrigenis”, Mitochondrial DNA Part B, vol. 4, nr. 2, pp. 3589–3590, jul. 2019.
[4]          Y.-X. Chen, Y.-W. Zhou, S.-L. Hou, en Y.-L. Huang, “Complete mitochondrial genome of Agapornis lilianae (Psittaciformes: Psittacidae), with its phylogenetic analysis”, Mitochondrial DNA Part B, vol. 4, nr. 2, pp. 3536–3537, jul. 2019.


Afscheid van een vriend

Daarnet het trieste nieuws gekregen dat Harrie van der Linden ons gisteren helaas ontvallen is.

Ik heb er eigenlijk even geen woorden voor. Harrie was niet alleen een goede vriend, hij was ook de man die me heel veel geleerd heeft. Hij was mijn leraar toen ik in de hobby stapte. Ik had dan ook het grootste respect voor Harrie. Harrie schreef standaardwerken over o.a. de grasparkiet en vele andere parkietensoorten, daarnaast was hij eveneens een gerenommeerd internationaal keurmeester. Geloof me, hij heeft avicultuur op een hoger niveau gebracht, hij was een voorbeeld voor velen.

Een monument is ons nu ontvallen.

Harrie BEDANKT voor alles.

Ons medeleven gaat uit naar zijn familie en zijn vele vrienden en kennissen.