1In flight — rotated 18°, cut

Baseline in-flight shape from logo-silhouettes.html, turned 18° clockwise; the cut lines turn with it, so the slices stay anatomical (wing/body, tail/body) rather than becoming an arbitrary grid. Every gap is a real hole — the shape is sliced and a band deleted — so it survives any wallpaper and the flat mono mask. Big tile is the launcher, then mono mask, then 40px.

2Soaring — cut, no rule across the wings

Short wings, fanned tail. The horizontal cut that crossed the wings is gone. Two ways to still read the tail: drop the horizontal entirely, or drop it to the tail root at y 60, below the primaries. Upright and rotated.

3Perched — same shape, sizing and styles

The exact perched bird, unchanged. What varies is how much of the tile it takes (r 34 is the adaptive-icon safe zone, r 46 nearly fills it) and the treatment. Circle tile shows what a round launcher mask keeps.

4Perched on a rule

Sitting on a hairline, the way everything in the UI sits on one. Hand-placed rather than auto-fitted, since the rule sets the width. A round mask would cut the rule's ends, so these are squircle-only.

31 is earmarked as the secondary mark — a wider, more illustrative lockup for the website and anywhere that isn't a launcher tile, alongside 19 as the app icon. It shares 19's geometry and cuts, so the two can't drift apart.

5Colourways

One pick per shape through every palette worth trying: the DESIGN.md accents, ink/bone inversions, and the flat mono mask. The in-app accent is a per-device setting, so the icon needs one fixed brand colour — this is that choice.

6Variant 19 — colour only

The chosen mark, geometry frozen, nothing varying but colour. Three slots matter in a two-tone cut: the ground, the body (belly, wing, legs) and the accent (head and mantle). C1 is what you already picked as 19. Grouped by what changes — accent hue, then the ground, then the body tone, then which region takes the accent. The 40px tile is the real test: at that size the accent has to still be a head and not a smudge.

7Dark / light pairs — coral vs chough red

C22 and C13 really are a pair — both put coral on the head and let the body flip bone↔ink with the ground, so nothing but the ground changes between them. Here that same pair is built for four reds, from your coral through the truer chough red to one step deeper, each with its light counterpart on bone and on pure white. The hue on body tile is the honest inverse for comparison, and the mono mask repeats because it's hue-independent — it's what Android will force on the notification icon whatever you choose.