The fish leave the Pacific Ocean and swim up the rivers to the same streamlets where they were born.
The word is a noun and (I think) means a small pool or tiny body of water
streamlet - a small stream
The word gives the location of the migrating salmon - the major food source for grizzlies.
Blue Gentian p.9 par.1
There in the shallows under the starflowers and blue gentians, they lay their eggs and die.
This word is a noun and it probably is referring to some kind of plant
blue gentian - a plant that produces showy, variously-colored flowers
The word gives a description of the kinds of places where the red salmon - grizzlies' main food source - lay their eggs
Rollicking p.9 par.2
As they swim home they are eaten by wolves, eagles, gulls and, along the Brooks River, by the people at fish camp, the ranger and the rollicking, diving, wonderful brown grizzly bears.
The word is a verb and it probably refers to the physical behavioral characteristics of a grizzly
rollicking - carefree and high-spirited
The word informs the reader that grizzlies are actually quite fun-loving creatures who are not all as daunting as Golden Ears puts herself out to be
Daintily p.11 par.1
Golden Ears sat down by her golden-eared cub, cleaned the bones from the fish and daintily ate it.
This adverb means to be peculiar about the way one goes about doing something.
daintily - nicely and prettily
The word informs the reader that Golden Ears is a "well-mannered" grizzly. It implies that she is not as savage is she may appear