09/02/2017 - Pigeons usually have ten primaries. However, exceptions with eleven primaries occur. The way in which this feature is inherited, has been unravelled after fifteen years of research and almost 500 test results. The expression of this characteristic is based on three genes, acting together.
15/12/2009 - It seems to us the best way, to inform you of widowhood methods, in the form of questions and answers which will give a comlete and detailed study about this subject. It will consequently become a dialogue between a novice and an expert who is prepared to instruct and pass on knowledge obtained by long experience.