\documentclass{article}

\input{../../preamble}

\begin{document}

\newcommand{\bird}[1]{\item{\makebox[5cm][l]{\textbf{#1:}}}}

A list of birds as defined in \textit{To Mock a Mockingbird}.

Refer to \href{Aviary.lean}{Smullyan/Aviary.lean} for implementation examples.

\begin{itemize}
  \bird{Bald Eagle} $\hat{E}xy_1y_2y_3z_1z_2z_3 = x(y_1y_2y_3)(z_1z_2z_3)$
  \bird{Becard} $B_3xyzw = x(y(zw))$
  \bird{Blackbird} $B_1xyzw = x(yzw)$
  \bird{Bluebird} $Bxyz = x(yz)$
  \bird{Bunting} $B_2xyzwv = x(yzwv)$
  \bird{Cardinal Once Removed} $C^*xyzw = xywz$
  \bird{Cardinal} $Cxyz = xzy$
  \bird{Converse Warbler} $W'xy = yxx$
  \bird{Dickcissel} $D_1xyzwv = xyz(wv)$
  \bird{Double Mockingbird} $M_2xy = xy(xy)$
  \bird{Dove} $Dxyzw = xy(zw)$
  \bird{Dovekie} $D_2xyzwv = x(yz)(wv)$
  \bird{Eagle} $Exyzwv = xy(zwv)$
  \bird{Finch Once Removed} $F^*xyzw = xwzy$
  \bird{Finch} $Fxyz = zyx$
  \bird{Goldfinch} $Gxyzw = xw(yz)$
  \bird{Hummingbird} $Hxyz = xyzy$
  \bird{Identity Bird} $Ix = x$
  \bird{Kestrel} $Kxy = x$
  \bird{Lark} $Lxy = x(yy)$
  \bird{Mockingbird} $Mx = xx$
  \bird{Owl} $Oxy = y(xy)$
  \bird{Phoenix} $\Phi xyzw = x(yw)(zw)$
  \bird{Psi Bird} $\Psi xyzw = x(yz)(yw)$
  \bird{Quacky Bird} $Q_4xyz = z(yx)$
  \bird{Queer Bird} $Qxyz = y(xz)$
  \bird{Quirky Bird} $Q_3xyz = z(xy)$
  \bird{Quixotic Bird} $Q_1xyz = x(zy)$
  \bird{Quizzical Bird} $Q_2xyz = y(zx)$
  \bird{Robin Once Removed} $R^*xyzw = xzwy$
  \bird{Robin} $Rxyz = yzx$
  \bird{Sage Bird} $\Theta x = x(\Theta x)$
  \bird{Starling} $Sxyz = xz(yz)$
  \bird{Thrush} $Txy = yx$
  \bird{Turing Bird} $Uxy = y(xxy)$
  \bird{Vireo Once Removed} $V^*xyzw = xwyz$
  \bird{Vireo} $Vxyz = zxy$
  \bird{Warbler} $Wxy = xyy$
\end{itemize}

\end{document}