For me when the chief points out a rare collectible, it pops up fast but to find it this is what I do: I put the chief at the top of the path and then quickly grab a kid. Then as soon as he points I pause the game. Then I use the number keys to look in every area, by then it usually pops up, but if it doesn't I un-pause the game and do the process all over again very quickly except I don't pause the game. Hope this helps.