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eNature Apps FAQ

Why is my Field Guide telling me it can't retrieve data?

eNature's field guide apps use what's knows as thin-client design. The app itself is very small and is really a specialized web browser—all the actual information and data the app uses are served to it from's website. None of it resides on your mobile device.

This means your app will load quickly, can be updated easily and won't take up much room on your device. All good… the downside is that you have to have a signal to use your Field Guide app.

That's less of problem than you may think. Most of the U.S. is well-served by mobile networks and coverage continues to rapidly increase in range and quality.

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Where does the content for eNature's field guides come from?

The eco-regions used to plot species distribution in eNature field guides were initially compiled in Descriptions of the Ecoregions of the United States by Robert G. Bailey of the U.S. Forest Service, who compiled them in March, 1995.

This volume was originally published in 1978 to provide a general description of the ecosystem geography of the Nation as shown on the 1976 map "Ecoregions of the United States." It was first published as an unnumbered publication by the Intermountain Region, USDA Forest Service, Ogden, Utah. It was reprinted in 1980 by the Forest Service, Washington, DC, as Miscellaneous Publication No. 1391. An explanation of the basis for the regions delineated on the map was presented elsewhere (Bailey 1983).

The technique of mapping ecoregions was subsequently expanded to include the rest of North America (Bailey and Cushwa 1981) and the world (Bailey 1989). In 1993, as part of the Forest Service's National Hierarchical Framework of Ecological Units (ECOMAP 1993), ecoregions were adopted for use in ecosystem management. They will also be used in the proposed National Interagency Ecoregion-Based Ecological Assessments. This volume updates the knowledge of the subject. The goal in preparing this edition, like its predecessor, was not to present information, but to strive for synthesis, i.e., the illustration of interrelationships.

A full description of Bailey's work and resulting eco-regions is available at

The species information used on both the website and this mobile Guide comes from a core content of wildlife information about almost 6,000 individual species initially used to create the printed Audubon Field Guides. All the data has been carefully reviewed and vetted by leading biologists, zoologists and other natural history specialists—who have ensured its accuracy as well as plotted the range of each species against the Bailey regions described above.

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Who's eNature? is the web's premier destination for information about the wild animals and plants of the United States. Over past years, eNature has consistently been one of the Internet's most-visited sites for nature and wildlife information and has won numerous awards and accolades. is owned and operated by the Shearwater Marketing Group, a privately-held company providing marketing services to both non-profit and private sector clients, focusing primarily on wildlife and nature.

Creating a Custom Field Guide/Using our content

eNature creates custom, private-label field guides for numerous organizations wishing to support their membership and education programs.

If you are interested in a custom field guide or licensing other material you have seen on, contact us at

We can't allow free use of our material but are happy to arrange reasonable licensing arrangements.

Advertising and Sponsorships on

eNature is a free site supported by our advertisers and sponsors. To learn more about getting your message out to the hundreds of thousands who visit eNature monthly, contact our advertising and business development team at

Site History was initially launched in February 2000 and shortly thereafter was acquired by the National Wildlife Federation in May 2001. NWF handed over management of to the Shearwater Marketing Group LLC in May, 2007.

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Where do I post questions you haven't answered?

Email us at

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What is the Chesapeake Bay Trust?

Their website answers this question perfectly…

At the Chesapeake Bay Trust, we believe that a heightened ethic of individual and community stewardship is essential to restoring and protecting the Chesapeake Bay. We also believe that knowing more about the nature around us can inspire and heighten the practice of environmental stewardship.

The Trust seeks to increase stewardship through outreach programs such as our mobile Field Guide to the Chesapeake that you're using now, as well as through grant programs, special initiatives, and partnerships that support environmental education, on-the-ground restoration, and community engagement activities.

The Chesapeake Bay Trust is an independent, nonprofit grant-making organization chartered in 1985 by the Maryland General Assembly to engage the public in the protection and restoration of the Chesapeake Bay and its tributary rivers and streams. Funding provided by the Trust sparks on-the-ground change in communities throughout Maryland and works to cultivate a new generation of Bay stewards.

The Trust receives approximately $4 million in contributions annually and reinvests those dollars through a variety of grant programs in community-led projects that reach each of Maryland's 23 counties and Baltimore City. In its first year, the Trust funded just 10 grants. Since then, through aggressive growth of our expertise, capacity, and funding, the Trust has received over 10,000 grant requests, awarding over $30 million to support environmental education and habitat restoration projects that have measurable impacts on the environment and that actively engage citizens in Bay and river restoration efforts.

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How to Use the Chesapeake Guide?

eNature's mobile Chesapeake Guide has been designed to be quite straightforward and intuitive to use. At its heart are the ten regional field guides within it.

The Chesapeake watershed is immense and contains tremendous biological diversity. The plants and animals of the Shenandoah Valley differ from those of the sand dunes at the mouth of the Bay—and this Guide provides users with targeted information that presents the species residing within a specific part of the watershed.

Once a user activates the Guide, it will allow them to either choose one of ten distinct eco-regions within the Bay's watershed or simply let their mobile phone choose the most appropriate guide based on its location. Users outside of the watershed will not be able to use their phones geolocation feature and have to choose a region manually.

After that, you should be good to go! Just choose the type of Guide you wish and start learning about the plants and animals that reside around the Bay.

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