diff --git a/MockMockingbird/Aviary.lean b/MockMockingbird/Aviary.lean
index 44d20df..341640f 100644
--- a/MockMockingbird/Aviary.lean
+++ b/MockMockingbird/Aviary.lean
@@ -51,6 +51,13 @@ Cardinal
 -/
 def C (x : α → β → δ) (y : β) (z : α) := x z y
 
+/--
+Converse Warbler
+
+`W'xy = yxx`
+-/
+def W' (x : α) (y : α → α → β) := y x x
+
 /--
 Dickcissel
 
@@ -195,6 +202,13 @@ Robin
 -/
 def R (x : α) (y : β → α → γ) (z : β) := y z x
 
+/--
+Sage Bird
+
+`Θx = x(Θx)`
+-/
+partial def Θ [Inhabited α] (x : α → α) := x (Θ x)
+
 /--
 Starling
 
@@ -224,3 +238,10 @@ Vireo
 `Vxyz = zxy`
 -/
 def V (x : α) (y : β) (z : α → β → γ) := z x y
+
+/--
+Warbler
+
+`Wxy = xyy`
+-/
+def W (x : α → α → β) (y : α) := x y y
diff --git a/MockMockingbird/Aviary.tex b/MockMockingbird/Aviary.tex
index 011478e..6caba30 100644
--- a/MockMockingbird/Aviary.tex
+++ b/MockMockingbird/Aviary.tex
@@ -1,6 +1,6 @@
 \documentclass{article}
 
-\input{../../preamble}
+\input{../preamble}
 
 \begin{document}