sitta canadensis การใช้

• These five make up a well-defined species group known as the " " Sitta canadensis " group ", and are sometimes considered to be a superspecies.
• In turn, it has been proposed that the triumvirate of " S . przewalskii ", " S . leucopsis " and " S . carolinensis " could be related to the " Sitta canadensis ", monophyletic group, corresponding to the subgenus " Micrositta ", which includes six species of average-sized nuthatches.