Snake Mapping & Monitoring

Martha’s Vineyard Snake Mapping Page


We are collecting data about snake sightings on Martha’s Vineyard, and are particularly interested in black racer sightings.

  • Please use the “Snake Survey Form” located beneath the mapping section to supply details about your observations.
  • Dropping a marker on the map is not the same as completing the form as we need details about your observation from the form.
  • Use a different form for each different locations and/or snake.
  • IMPORTANT: If you use the form at the bottom of the page, please remember to answer the spam-prevention question and then click the “Send” button at the bottom when you have finished.

To Download a Martha’s Vineyard Snake ID Card

English – click here

Portuguese – click here

You can also explore these very useful sites:
UMass’ Snakes of Massachusetts Site
Tom Tyning’s Western Mass Naturalist Site

Using the mapping section to map your snake sighting or get GPS coordinates (this is optional):

1) RIGHT CLICK (or if on a phone or tablet, tap) as close as possible to the location where you saw a snake; this displays a moveable standard marker on the map.

2) Drag the marker to the desired location – you can resize or move the map as necessary (GPS coordinates of the marker location will appear in the address/location field below the map).*

3) Type the snake name into the marker title text field.

4) Optional: type a brief descriptive note into the marker description field, and/or upload an image.

5) Important: check the “are you human” checkbox and THEN click the “Add Marker” button, in that order. This will add your marker to the database. You must refresh the page after adding the marker in order to see it in place and with the snake icon.
* if you cannot drop a marker, try typing a street address of snake location into the marker address/location text box below the map

Add your own marker

Marker Title
Marker Address or GPS Location

Or right-click on the map and drag to add a marker

Marker Description
Please tick this box to prove you are human

The Snake Survey Form:

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