PUSH 

 ROD 



ARGOS 

 ANTENNA 



TAG 

 HOLDER 



VHP 

 ANTENNA 



FOLDING 

 BARBS 

 DEPLOYED 



Figure 8. 1990 Argos-monitored radio tag as modified during the field season, with 

 attachments on the extended housing rather than the endcaps. Attachments are shown 

 with one pair of folding barbs in the "deployed" position. Push rod falls away after 

 attachment. 



19 



