All imaged illegals are in the order listed in UPU Circular 30 page 10 through 13.
Many of the following illegal stamps can be found as imperforates and as color proof sets as well.
Most times now (2016) the souvenir sheet sets and sheetlet sets are sold individually. Many times the stamps have been removed from the sheetlets
and souvenir sheets. All of these "tactics" are used to avoid detection by UPU circular descriptions.
Sea Creatures, Dolphins, Fish
2002 Dolphins Species with Scouting Emblems Sheetlets with Six Stamps and Souvenir Sheet
2002 Dolphins and Sealife Souvenir Sheet
2003 Dolphins with Rotary Emblem Sheetlet of Nine
2003 Tropical Fish Nature Conservancy Souvenir Sheet with Three Stamps
2003 Tropical Fish Nature Conservancy Sheetlet of Six
2003 Tropical Fish Nature Conservancy Souvenir Sheet
Birds (ducks, bats, hummingbirds, owls, seagulls, song birds, parrots, pigeons, penguins and "thrushes")
2003 Birds Nature Conservancy Souvenir Sheet with Three Stamps
2002 Birds Species Sheetlets with Six Stamps and Souvenir Sheets
The UPU Circular description is very good on these. Almost all the sheetlets and souvenir sheets are being sold individually by unscrupulus
sellers. Here are individual images of the sheetlets with their corresponding souvenir sheets. Now you know what to avoid.
2002 Owls and Birds of Prey with Rotary Emblem Souvenir Sheetlets of Six
2003 Owls Sheetlets of Six
2003 Owls with Scouting Emblems on Side Souvenir Sheet
2003 Owls with Scouting Emblems on Side Souvenir Sheetlet of Six
2003 Birds Species Sheetlets with Six Stamps
Owls (Les Chouettes)
Sparrowhawks (Les Eperviers)
Falcons (Les Faucons)
2003 Birds (Oiseaux) Sheetlet with Ten Stamps
2003 Birds (Oiseaux) with Scouting Emblem Souvenir Sheets
These souvenir sheets are of the same stamps as the previous sheetlet of 10.
2003 Parrots with Scouting Emblem Sheetlets of Six
2002 Penguins with Rotary Emblem Souvenir Sheetlet of Six