Guy M. Kirwan

Resolving the mystery of Cyanerpes (Thraupidae) ‘black eggs’, with notes on the breeding and exaggerated displays of Hypocnemoides antbirds (Thamnophilidae)

Between the end of the nineteenth and the middle of the twentieth centuries intermittent reports of ‘black eggs’ belonging to one or more species of Passeriformes in South America were usually attributed to small-bodied tanagers of the genera Cyanerpes and Chlorophanes. Doubts co...

Towards a unified publicly accessible database of avian type specimens

Type specimens represent the crucial physical reference for any scientific bird name, but type material is scattered widely across the globe, and there is still no one comprehensive source documenting the presence, status and condition of all avian type specimens, as well as asso...