Beamer : légende sur le côté d'une figure

\documentclass{beamer}

\begin{document}

\begin{frame}
    \begin{figure}
        \begin{columns}
            \begin{column}{.7\textwidth}
                \includegraphics[width=\textwidth]{example-image-duck}
            \end{column}
            \begin{column}{.25\textwidth}
                \caption{text text text text}
            \end{column}
        \end{columns}
    \end{figure}
\end{frame}

\begin{frame}
    \begin{figure}
        \begin{columns}[T]
            \begin{column}{.7\textwidth}
                \includegraphics[width=\textwidth]{example-image-duck}
            \end{column}
            \begin{column}{.25\textwidth}
                \caption{text text text text}
            \end{column}
        \end{columns}
    \end{figure}
\end{frame}

\begin{frame}
    \begin{figure}
        \begin{columns}[b]
            \begin{column}{.7\textwidth}
                \includegraphics[width=\textwidth]{example-image-duck}
            \end{column}
            \begin{column}{.25\textwidth}
                \caption{text text text text}
            \end{column}
        \end{columns}
    \end{figure}
\end{frame}

\end{document}