Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Oct 10;9:14512. doi: 10.1038/s41598-019-50986-4

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Map of the study area with locations for all wading bird nesting colonies sampled. Solid white circles represent Ardea heron islands, solid white triangles represent Egretta heron islands, and empty white circles represent inactive islands. Inset maps show the difference in size (note scale) and shape typical of (a) Egretta and (b) Ardea heron islands. Map generated in ESRI ArcMap 10.6.1⁷⁷ (http://www.esri.com/). Main map satellite imagery is the World Imagery basemap within ArcGIS 10.6 software (http://www.esri.com/data/basemaps), credited to Esri, DigitalGlobe, Earthstar Geographics, CNES/Airbus DS, GeoEye, USDA FSA, USGS, Aerogrid, IGN, IGP, and the GIS User Community. Gray inset extent map imagery is the Light Gray Canvas basemap within ArcGIS 10.6 software (http://www.esri.com/data/basemaps), credited to Esri, HERE, Garmin, FAO, NOAA, USGS, © OpenStreetMap contributors, and the GIS User Community. Inset satellite imagery (a,b) image data © Google 2019: Google Earth (Map data: Google) (https://www.google.com/earth/).