Deen) eb. ONer BU lis fl N 11 
Blackbirds, for example, may appear a paltry 
endowment in the eyes of an inhabitant of the 
San Joaquin Valley in California, where yellow- 
heads nest in near countless numbers. Regrettably, 
the species now approaches extirpation in Illinois. 
Once it nested in small marginal colonies in south- 
ern Illinois, in somewhat larger colonies in central 
Illinois, and in large colonies in the northern 
division. Today only remnants of the northern 
colonies still survive. 
REVISION OF THE LISTS: 
Presentation and dissemination of the “Black” 
and “Red” Lists is meant as the initial stage in 
an attempt to help preserve more avian habitats 
in Illinois. Local IAS chapters, it is to be hoped, 
will arrange to furnish the Society with detailed 
statements on the following: 
(1) The existence in their area of breeding 
populations of the red-listed species; 
(2) The location and nature of the habitats 
containing these birds; 
(3) Estimates of population size; 
(4) Annual determination of the nesting 
success of the species; 
(5) The registered ownership of nesting places 
and prospects for maintaining the habitats in their 
present condition. 
Thus may the Illinois Audubon Society 
periodically revise the lists according to the 
newest knowledge, as well as periodically alert 
the membership to the changing status of each 
endangered species. 
“New information 
from chapters and 
members may 
cause the lists to be 
revised.” 
