Another common idea that made for popular Latvian surnames were birds. Some examples of bird names I have come across in my research are:
Balodis (dove or pidgeon)
Cirulis (lark)
Cakste (shrike)
Dzerve (crane)
Dzenis (woodpecker)
Erglis (eagle)
Gailis (rooster)
Gulbis (swan)
Irbe (partridge)
Rubenis (grouse)
Strazdins (thrush)
Vanags (hawk)
These bird names are less often combined with other words than tree names are, but it is definitely not unheard of to do so.
