Creating an SVG image of a pelican riding a bicycle involves combining vector graphics elements to depict both the bird and the bicycle. Below is a simple SVG code that attempts to illustrate this concept. Please note that this is a highly stylized and abstract representation, as creating a realistic depiction would require more detailed design work and assets.

```svg
<svg width="400" height="400" xmlns="http://www.w3.org/2000/svg">
  <!-- Pelican -->
  <path fill="#228B22" d="M50,150 Q100,200 150,150 Q200,100 250,150 Q300,200 350,150 Q400,100 400,50 Q350,0 300,50 Q250,100 200,150 Q150,200 100,150 Q50,200 0,150"/>
  <!-- Bicycle -->
  <circle cx="250" cy="100" r="30" fill="#FFFFFF"/>
  <path stroke="#000000" stroke-width="5" d="M250,100 C260,120 280,120 290,100"/>
  <circle cx="260" cy="120" r="10" fill="#000000"/>
  <circle cx="280" cy="120" r="10" fill="#000000"/>
  <!-- Combining elements -->
  <g transform="translate(0, 20)">
    <path fill="none" stroke="#000000" stroke-width="3" d="M100,200 C120,220 140,220 160,200"/>
    <path fill="none" stroke="#000000" stroke-width="3" d="M140,220 C160,240 180,240 200,220"/>
  </g>
</svg>
```

This SVG code uses basic shapes to represent a stylized pelican (using a simple curved path for the body) and a bicycle (with a circle for the rear wheel, a path for the frame, and circles for the front wheels). The elements are positioned to suggest the pelican is riding the bicycle. The styling is quite basic, using colors that might resemble a pelican's plumage and a bicycle's typical colors.

For a more realistic or detailed depiction, you would need to use more complex shapes, shading, and possibly external vector graphics design tools to refine the images before integrating them into SVG code.

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