Creating an SVG image of a pelican riding a bicycle involves describing the pelican, the bicycle, and their interaction in the SVG markup. Below is a simple SVG representation. Note that creating a detailed and realistic image would require more complex shapes, colors, and possibly additional elements, which can be quite extensive to describe in text form. However, this example provides a basic structure:

```svg
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200">
  <!-- Pelican -->
  <path fill="#8B4513" stroke="#8B0000" stroke-width="4" d="M50,80 Q75,100 100,80 Q125,60 150,80 Q175,100 150,120 Q125,140 100,120 Q75,100 50,80 Z"/>
  <!-- Beak -->
  <path fill="#FFFFFF" d="M60,60 Q70,70 80,60 Q90,50 100,60 Q110,70 120,60 Q130,50 140,60 Q150,70 140,80"/>
  <!-- Wings -->
  <path fill="#C0C0C0" d="M80,30 Q85,20 100,30 Q115,40 120,30 Q125,20 140,30 Q155,40 150,50"/>
  <path fill="#C0C0C0" d="M120,30 Q115,20 100,30 Q85,40 80,30 Q75,20 60,30 Q45,40 50,50"/>
  <!-- Bicycle -->
  <rect fill="#FFFFFF" x="100" y="70" width="20" height="40"/>
  <circle fill="#000000" cx="110" cy="90" r="5"/>
  <!-- Handlebars -->
  <circle fill="#000000" cx="110" cy="80" r="8"/>
  <!-- Pedals -->
  <path fill="#8B0000" d="M115,100 Q120,110 125,100"/>
  <path fill="#8B0000" d="M115,90 Q120,80 125,90"/>
  <!-- Seat -->
  <rect fill="#8B0000" x="105" y="110" width="10" height="10"/>
</svg>
```

This SVG code creates a very basic illustration of a pelican riding a bicycle. The pelican is represented with a brown body (`#8B4513`), a white beak, and light gray wings. The bicycle is a simple white rectangle for the frame, black circles for the tires, and a black circle for the handlebars. The pedals and seat are drawn as dark brown paths.

For a more detailed and realistic depiction, you would need to refine the shapes, add shading, and possibly include additional elements like a helmet for the pelican, a more detailed bicycle frame, and possibly a background or scenery. This would significantly increase the complexity of the SVG code.

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