Here are the sex ratios (percent male) that Childers got with various hybrid crosses. The male parent is listed first. There is some variation in the numbers from other studies

Redear X Bluegill 97 (3)
Bluegill X Redear 97
Redear X Green 69
Green X Redear 48
Bluegill X Green 97
Green X Bluegill 68 (2)
Redear X Warmouth 55
Bluegill X Warmouth 69 (2)
Green X Warmouth 16
Warmouth X Green 84

http://www.pondboss.com/forums/ubbthread...=true#Post22131

Bluegill and most other sunfish are colonial nesters, constructing nests in densely packed aggregations (Gross and MacMillan 1981). Different species, i.e., bluegill and redear sunfish, can frequently be found nesting together in the same colony (Childers 1967).

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=119087&fpart=1

HYBRID SUNFISH FOR STOCKING SMALL PONDS
WILLIAM E. RICKER
Indiana University, Bloomington, Indiana

Wawasee Hatchery. Area--0.32 acre. This pond
was stocked in April 1942 with 10-15 male bluegills and an equal
number of female redears. There were apparently two principal
spawning times, which produced fish of two size groups distinct
enough to be followed through the season.

Male bluegills and female redears were put into a pond in early
spring, and the resulting spawning was at least. reasonably successful.
The number of fingerlings obtained (46,000) was said, however, to be
less than what is usually recovered from the reproduction of either of
the parent species, by itself, in a similar pond. These fish were subsequently
distributed into a number of waters.