other birds of prey, eight young mallards in native hay mowing and one nesting 
femaic mallard in alfalfa mowing. 4 female Dlue-winged teal was found that 
apparently died from starvation resulting from an egg becoming lodged in the 
Cloaca. nc immature mallard was found dead from injury recelved by striking a 
Power Line. 4n adult redhead crake was found dead, c&use of death not determin- 
ed. 
Tatile 5 shows the fates af the 16 non-mallard neste under cheaervation. 
Table 4. -- Ayerace Broode Observed Following Hatching 

Species 

No. Broode No, of Average 
Average Brood as Indicated 
Observed Young Brood by Nesting Observations 
Msllard 29 ony? 7.2 7.9 (86 nests) 
Pintail 6 a9 6,5 Ne fetch observed 
Gadwal] ¢ 26 6,5 No.hatch obserred 
nhoyeler a a) ? 11.0 (1 nest} 
Green-winged teal zZ 18 6.5 No hatch observed 
Cinnamon teal 2 10 5.0 9.0 (4 neste) 
Blue-winged teal 2 19 9.5 No hatch obserred 
Redhead ? 4} 5,9 3.0 (1 nest) 
"Ring-necaed duck 2 a7 9,9 No hatch obserred 
Budéy duck 7? 46 6.6 No hatch obserred 

"Oheerred on upper Rio Grande rather then in valley proper. 

Table & -- Fate of Neste and Eege of Species Other Than Maillard 
Species No, of Bere Fate of Eges 
Pintail 7 4 destroyed by predator, @ deserted 
Fiotail 7 1 destroyed by predater, 4 deserted, ¢ mipring 
Pintail 7 Unknown, nest newer found again 
Fintail g Still incubating, (3 pipped} when 
laet visited in hayfield 
Cinnamon teal ? 7 hatched 
Cinramon teal 11 S hatched, 2 were infertile 
Cinnamen teal 10 19 hatched 
Cinnamon teal 10 10 hatched 
Gadwall 4 4 destroyed by predator 
Gadyall 9 9 destroyed by mowlng 
bhorel er 11 ll hatched 
Shoveler 6 6 destroyed by predator 
Redhead 9 9 Lost by flooding 
Redhead & E leat by flooding 
Hechead 7 S hatched, 2 infertile, 2 died in incubation 
"Ruddy duck 5 5 deserted when water lerel dropped 
t 

* Not on official study areas 
140 
