(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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How to take part in the urban tree survey

Taking part in the urban tree survey is straightforward. Just follow these simple steps and use the tools and guides below to help you:

  • print out the identification key and survey form
  • identify trees and record where you found them - if you have a camera, take some photos
  • check your findings online using our interactive identification key and send us your results using the online survey form and map

The 'how to' guide

This takes you through the survey process and makes it easy for you to collect and give us information that is useful for scientific research.

How to complete the tree survey PDF (291.8 KB)

Print the survey form and identification key

Print these and take them with you to do your survey. The identification key is a step-by-step guide to identifying trees, and the survey form will help you record the right information. You will need one form for each tree you survey.

Printable tree identification key (25 pages) PDF (1.2 MB)

Printable survey form PDF (286.0 KB)

If you have a smartphone or another mobile device, you can use the interactive tree identification key while you're out and about.

Identify trees in streets, parks and gardens

Pick an area to survey and record the trees you find, and where you found them. If you have a camera, take some photos.

Record your results online

When you have completed your survey, send us your results using our online survey form and map. We also have an interactive version of the identification key so you can check your identifications when you get back.

Enter your results using the online survey form

Interactive tree identification key

Get tips from the experts

If you are having trouble identifying trees, you can get help at our tree identification forum. You can post images and get advice from Museum experts and other people doing the survey.

Visit the tree identification forum

You can also read some tips and advice from Museum experts to help you identify trees accurately.

Tips for identifying trees

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