semipalmated
adjective
semi·pal·mat·ed ˌse-mē-ˈpal-ˌmā-təd 
ˌse-ˌmī-,
-mi-,
-ˈpäl-,
-ˈpä-
: having the toes joined only part way down with a web
a plover with semipalmated feet
Example Sentences
Recent Examples on the Web In Northfield, five semipalmated plovers were recorded, and in Ashfield, a family of four sandhill cranes continued to be regularly observed. 
BostonGlobe.com, 24 July 2021 Reports from South Monomoy in Chatham included 25 blue-winged teal, 4 Northern pintails, 4 stilt sandpipers, 2 pectoral sandpipers, 27 white-rumped sandpipers, and 1,670 semipalmated sandpipers. BostonGlobe.com, 3 Sep. 2019
BostonGlobe.com, 24 July 2021 Reports from South Monomoy in Chatham included 25 blue-winged teal, 4 Northern pintails, 4 stilt sandpipers, 2 pectoral sandpipers, 27 white-rumped sandpipers, and 1,670 semipalmated sandpipers. BostonGlobe.com, 3 Sep. 2019 Word History
First Known Use
1785, in the meaning defined above