גַּם־חֲסִידָ֣ה בַשָּׁמַ֗יִם יָֽדְעָה֙ מֽוֹעֲדֶ֔יהָ וְתֹ֤ר וסוס [וְסִיס֙] וְעָג֔וּר שָׁמְר֖וּ אֶת־עֵ֣ת בֹּאָ֑נָה וְעַמִּ֕י לֹ֣א יָֽדְע֔וּ אֵ֖ת מִשְׁפַּ֥ט יְהוָֽה׃
Rashi on Jeremiah
her seasons The time they pass to the islands of the sea because of the cold, and the time of their return.