"spotting"的搜索结果

father helps son focus the spotting scope for a closer look

标签: father,helps,son,focus,the,spo

using a spotting scope researchers stufy the behavior of wild birds

标签: using,a,spotting,scope,researc

visitors using a spotting scope from a blind to view their favorite birds

标签: visitors,using,a,spotting,scop

birds tail is being temporarily marked with red paint for short term spotting during arbovirus field study

标签: birds,tail,is,being,temporaril