Whether the bird couples on these stamps are exploring branches adorned with hearts, offering a heart-shaped flower as a token of affection, pecking curiously at hearts that fall like spring petals, or nesting in peace under a heart-shaped moon, their behavior sends a universal message: that togetherness marked by small, thoughtful gestures is the essence of a true and loving bond.

One of the four stamps shows two birds — one light blue with darker blue wings, the other cream-colored with green wings — facing away from each other but overlapping as they share a moment of inspecting green-leafed branches adorned with small white hearts.

On a second stamp, a blue bird with yellow wings holds in its beak a green leafy stem with a red heart-shaped flower, either planning to give it to, or pleased to have received it from, a red bird with blue wings.

On a third stamp, two white birds with light blue wings doze contentedly in a nest under a starry night sky made all the more cozy by a heart-shaped moon.

On a fourth stamp, a blue bird with dark blue wings and a red bird with black wings use their beaks to explore a gentle flurry of orange and yellow hearts that fall from above like spring petals and land at their feet.