Creating a detailed SVG image of a pelican riding a bicycle involves several steps, including designing the pelican, the bicycle, and their interaction. Since I can't directly create or render images, I'll provide you with a simple SVG code that represents a basic version of a pelican riding a bicycle. This example will be quite stylized and simplified for demonstration purposes.

```svg
<svg width="400" height="300" xmlns="http://www.w3.org/2000/svg">
  <!-- Pelican -->
  <g id="pelican">
    <!-- Body -->
    <circle cx="200" cy="180" r="40" fill="#F0E68C" />
    <!-- Head -->
    <circle cx="200" cy="160" r="20" fill="#FFD700" />
    <!-- Wings -->
    <path d="M 200 180 Q 210 200 200 220" fill="none" stroke="#000000" stroke-width="4" />
    <path d="M 200 180 Q 190 200 200 220" fill="none" stroke="#000000" stroke-width="4" />
    <!-- Beak -->
    <path d="M 200 160 C 190 150, 210 150, 200 160" fill="none" stroke="#000000" stroke-width="4" />
    <!-- Feet -->
    <polygon points="180,220 220,220 200,240" fill="#000000" />
    <polygon points="220,220 180,220 200,240" fill="#000000" />
  </g>
  
  <!-- Bicycle -->
  <g id="bicycle">
    <!-- Frame -->
    <circle cx="300" cy="150" r="30" fill="#F5DEB3" />
    <circle cx="250" cy="150" r="30" fill="#F5DEB3" />
    <circle cx="350" cy="150" r="30" fill="#F5DEB3" />
    <!-- Wheels -->
    <circle cx="295" cy="130" r="15" fill="#FFFFFF" />
    <circle cx="305" cy="130" r="15" fill="#FFFFFF" />
    <!-- Handlebar -->
    <circle cx="320" cy="160" r="5" fill="#000000" />
    <!-- Seat -->
    <rect x="285" y="170" width="30" height="10" fill="#000000" />
  </g>
  
  <!-- Pelican on Bicycle -->
  <g transform="translate(20, -20)">
    <use href="#pelican" />
    <use href="#bicycle" />
  </g>
</svg>
```

This SVG code creates a very basic illustration of a pelican riding a bicycle. The pelican is represented with a simple body, head, wings, beak, and feet, while the bicycle includes a frame, wheels, handlebar, and seat. The pelican is positioned on the bicycle using a `transform` attribute to adjust its placement.

For a more detailed and realistic depiction, you would need to enhance the shapes, add more intricate details, and possibly use more complex paths and gradients. Tools like Adobe Illustrator, Inkscape, or online SVG editors can help refine and create more detailed illustrations.

> EOF by user