# 哈斯特巨鹰素材来源与生成记录

- 日期：2026-11-02（Asia/Shanghai）。
- 制作：BirdGacha / OpenAI ImageGen，内置 image_gen 工具，透明背景。
- 用途：替换同物种的简化 SVG 徽章；旧 SVG 保留为加载失败回退。
- 体型、强壮足部、长而宽的尾羽依据骨骼及条目描述。羽色与头部羽毛属于艺术推测，不能视为已证实的精确复原。
- 生成插画不沿用旧 SVG 的 CC0 声明，也不标为花叔原库贴纸。

## Wiki 参考

- [Wikipedia 物种条目](https://en.wikipedia.org/wiki/Haast%27s_eagle)。
- [Wikimedia 形态参考](https://commons.wikimedia.org/wiki/File:Haast%E2%80%99s_Eagle_Skeletal_Reconstruction.png)：Beyondourworld，2023-09-29，骨架比例参考；[CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)。
- 参考图作为形态输入，未将原照片或骨架图加入网站静态资源。参考作品权利仍归原作者，不为生成图擅自声明第三方许可。
- 本项目已有 `raphus-cucullatus.png` 仅用于笔触、白边与透明背景风格参考。

## 交付规格

- `hieraaetus-moorei.png`：内置工具生成的透明原图，1254×1254。
- `hieraaetus-moorei.webp`：高清导出，保留原尺寸，quality 90。
- `hieraaetus-moorei-optimized.webp`：卡面与详情展示，640×640，quality 82。
- 两种 WebP 均保持 alpha，alphaQuality 100、effort 6；不裁切或铺底。
- 复现编码：`node analysis_scripts/encode_extinct_bird_art.cjs`。
- 高清导出沿用现有 `-optimized.webp` → `.webp` 逻辑。

## 最终生成提示词

```text
Use case: scientific-educational.
Asset type: production transparent natural-history bird sticker for BirdGacha collectible cards.
Primary request: create ONE original full-body living Haast's eagle (Hieraaetus moorei), an artistic reconstruction, using reference 1 solely for skeletal proportions and reference 2 solely for painterly finish and narrow white sticker outline.
Input images: Image 1 is the Wikimedia skeletal reconstruction by Beyondourworld, anatomical guidance only; ignore its text, human silhouette, second skeleton, and tiny corner cartoon. Image 2 is our existing dodo sticker, style/finish only, do not copy dodo anatomy.
Subject: large powerful forest eagle in a calm standing three-quarter profile facing right, folded broad wings, a long broad fully visible tail, deep muscular chest, relatively small elongated head with a massive dark hooked eagle bill, strong long lower legs and exceptionally large grasping feet with curved black talons. Two normal legs, anatomically natural toes. Short pale buff head feathers, mottled earthy brown body and warm cream streaked breast, subtle amber eyes, ochre scaly legs; plumage is a restrained speculative reconstruction rather than known fact. Eagle proportions informed by skeleton, not a bald eagle or a fantasy monster.
Style/medium: finely detailed semi-realistic hand-painted natural-history illustration, layered feather detail, soft natural light, clear silhouette readable at 200px, same polished subtle shading as dodo reference.
Composition: single bird centered, full bill, tail tip and both feet within frame, 6% clear margins, square artwork, no support object.
Background: genuine transparent alpha, narrow consistent white die-cut outline around silhouette.
Constraints: no skeleton, no text, no label, no human, no second animal, no scenery, no ground, no cast shadow, no card frame, no logo, no watermark, no fake checkerboard.
```