Overview

The Ducks Unlimited API provides location data for university chapters affiliated with Ducks Unlimited, the wetlands and waterfowl conservation organization. It returns GeoJSON-compatible location data for chapters across cities and states. No authentication is needed, making it easy to query directly.

Beginner Tip

This is an ArcGIS-based API; the query parameter "where=1=1" returns all records. You can filter by adding conditions like "where=STATE='TX'" to get chapters in a specific state.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

Ducks Unlimited data via REST API

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "status": "success",
  "data": {
    "result": "Data from Ducks Unlimited",
    "description": "API explorer that gives a query URL with a JSON response of locations and cities",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

features Array of feature objects, each representing a university chapter location.
attributes Key-value pairs of chapter data fields such as name, city, state, and contact info.
geometry Coordinates object with x (longitude) and y (latitude) values for the chapter location.
geometryType Type of geometry returned (e.g., "esriGeometryPoint" for point locations).
objectIdFieldName Name of the field used as a unique identifier for each feature in the dataset.

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://gis.ducks.org/datasets/du-university-chapters/api/query?where=1%3D1&outFields=*&f=json";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

Empty features array The "where" query parameter syntax is incorrect or the filter matches no records.
Use "where=1=1" to return all records first, then refine your filter. URL-encode special characters like = as %3D.
400 Bad Request Missing the "f" (format) parameter in the query string.
Always include "f=json" in your query parameters to specify JSON output format.
Unexpected response structure ArcGIS APIs wrap data in a "features" array with nested "attributes" and "geometry" objects.
Access data via response.features[0].attributes for field values and response.features[0].geometry for location data.

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS NO
Category Geocoding
Difficulty Beginner
Listing details not endpoint-verified

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