short-toed treecreeper
Certhia brachydactyla, a species of bird in the family Certhiidae.
present participle of cross someone's T
(malacology) Having an extremely narrow conch shape (between 0 and 30% of the diameter) with umbilical width index between 20 and 30%.
The increase in rate of a chemical reaction caused by the presence of a catalyst. / An amount of catalyst, expressed as the increase of the rate of its reaction.
古い樫の林で野鳥観察をしていると、昆虫を探して幹をよじ登る短趾キバシリ（Certhia brachydactyla）を見つけました。
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