The photos are shown in the following order for a locality (e.g. a country): The ‘Bs’ come first, starting with birds, followed by butterflies, then bees, inclusive of the bumblebees. Sometimes hoverflies and other insects are included. Finally, the wingless animals are shown, mostly mammals and reptiles. This does not mean that there are pictures of all these types of animals for each locality. Rather, it varies a lot, especially for the insects, which are a more recent interest of mine. An animal section is sometimes divided into various major biotopes (e.g. the four parts of Birds Peru such as the Cloud rainforest and the Andes).

Birds are the prominent animal of the website, which I have been photographing around the world since the end of the 1970’s. In accordance with the global perspective of the site, the bird photos are systematized according to the ‘Illustrated Checklist of the Birds of the World’, published by HBW and BirdLife International in Lynx Edicions (2014). Here, the world population of birds are systematized according to the most recent research results on species and races. This taxonomy often differs from those found in most local field guides. The English names of the birds are also taken from this checklist of the birds of the world. Even if I have followed this order in presenting the bird photos throughout the site, the scientific names are not used much. At most, the family and sub-family names are sometimes specified, usually for insects, which names in Swedish and sometimes English are more unclear than for birds.

I have not found any comparable checklist of the other ‘Bs’ of the world. But there are still many good lists around to build on. The order of presenting the butterfly photos is based on the first volume of the ‘Encyclopedia of the Swedish Flora and Fauna’ that covers all 140 species of Nordic butterflies (‘Nationalnyckeln’, Uppsala, Sweden 2005), to which I have added subfamilies and sometimes tribes and genera not found in the Nordic countries, mainly in the Americas and Australia. The photos of the bumblebees and the bees are named and systematized according to ‘The Field Guide to Bees of Great Britain and Ireland’ by Steven Falk (2015). It is also useful for the bee fauna in Sweden, since most of those of the book are also found here. Since I have only recently started to photograph such insects, only a few such photos have so far been taken outside Sweden. This also goes for hoverflies, where I use the Swedish and scientific names found in another ‘Nationalnyckel’, viz. ‘Tvåvingar: Blomflugor’ from 2009. Since there are no English names given for the hoverflies in these two volumes, I use their scientific names. For mammals, I have used ‘A field guide to the larger mammals of Africa’ by Jean Dorst and Pierre Dabdekit (1972) to group the photos. For reptiles, I have used guides found on internet. Finally, the order of presentation of the photos of the Artic flowers on the Spitsbergen page is based on ‘Den nya nordiska floran’ (2003) by Bo Mossberg and Lennart Stenberg.