The Singing Fish (a.k.a. "Bigmouth Billy Bass") by Gilad Aharoni

Made from half a sheet of standard letter-size paper. From OrigamiUSA's PCOC Play (Pacific Coast OrigamiUSA Conference 2005).

Star-shaped box (traditional)

I used back-to-back sheets to get the two-color effect. From Hideaki Sakata's Origami.

Flying Nun by Stephen Weiss

From Stephen Weiss's Wings and Things: Origami That Flies

Volcano by Jodi Fukumoto

Uses two squares of paper. From Jodi Fukumoto's The Guide to Hawaiian Style Origami.

Flower by David Collier

From Eric Kenneway's Complete Origami

Sea otter by Hideaki Sakata

From Hideaki Sakata's Origami Encyclopedia

This Week's Folds (5 May 2020 – 11 May 2020)

Emu by Robert Lang

From Robert Lang's Origami Design Secrets

Marmot by Robert Lang

From Robert Lang's Origami Animals

Marabou stork by Dr. Victor Solorzano Sagredo

Made from a right isoceles triangle. From Dr. Victor Solorzano Sagredo's Papiroflexia Zoomorfica, Vol. 2

Vulture by Dr. Victor Solorzano Sagredo

From Dr. Victor Solorzano Sagredo's Papiroflexia Zoomorfica, Vol. 1

Crane's egg modular box by Richard Alexander

Instead of duo paper I used back-to-back sheets, so this took six squares rather than three. From Michael G. LaFosse's Japanese Paper Crafting.

Malay tapir by Jun Maekawa

From Kunihiko Kasahara and Toshie Takahama, Origami for the Connoisseur

Witch on a broomstick by Paul Jackson

From Paul Jackson's Festive Origami

Falcon by Miguel A. Salvatella(?)

From Miguel A. Salvatella, A Sheet of Paper (not sure if Salvatella is author, or editor, or publisher!)
Almost every model in this book uses cuts. The falcon has one totally unnecessary cut (to widen the tail).

The Last Couple Weeks' Worth of Folds (22 Apr 2020 – 4 May 2020)

Woodpecker by Yoshihide Momotani

From Yoshihide Momotani's Skyflying Origami Birds

Shakespeare by Eric Kenneway

From Eric Kenneway's Folding Faces

Fried egg by Peter Engel

Engel calls it "inflatable egg." Bacon slices are from two 2-by-1 sheets. From Peter Engel's Origami Odyssey.