Waterfowl Survey for the week of
December 20, 2007
Management	Ducks				Geese
Unit	Total	Mallards	Other Dabblers	Divers	Total	Dark	Light
Big Sioux	100	100%	0%	0%	2000	100%	0%
Ruthven	100	0%	0%	100%	200	100%	0%
Ingham	0				100	100%	0%
Black Hawk	200	100%	0%	0%	0
Bays Branch	5100	100%	0%	0%	12800	100%	0%
Rice Lake	200	100%	0%	0%	2100	100%	0%
Big Marsh	0
Sweet Marsh	0
Maquoketa	100	11%	56%	33%	100	100%	0%
Odessa	300	48%	0%	52%	2500	100%	0%
Coralville	0				0
Otter Creek Marsh	0				200	100%	0%
Saylorville	No Report - For information contact (515) 432-2823
Red Rock	No Report - For information contact (515) 961-0716
Rathbun	19200	47%	2%	51%	15000	100%	0%
Mt. Ayr	1400	99%	0%	1%	7000	100%	0%
Wapello	0				1200	100%	0%
Missouri River	No Report - For information contact (712) 423-2426
Riverton	0				0
State-wide total	26100	60%	1%	38%	42900	100%	0%
Weather and migrations during the survey period:
This past week was dominated by milder conditions across much of Iowa.  Daytime high temperatures in the north zone held right around the freezing mark while the southern regions of the state benefited with melting conditions.  Snow and ice cover in the fields is still close to 100% north of I80, which limits feeding opportunities for remaining waterfowl.  Fields in the extreme south are opening up, especially south facing slopes, which should be ample for waterfowl which are able to cover large areas in search of lunch.  The only migration continues to be an exodus from Iowa as birds look to the south for an easier meal.