Mo) . 16, No. 7 
Page 3 
This summer, however, we are d ° cum ® nt ' 8 jul^W^hatching 
nest success on the sanctuaries.at Bogota, U only 
24 ?r P ercenJ 9 ‘porty-Jour (91-7 percent) of the 48 unsuccessful nests 
this year were destroyed by predators. 
Recent departures fro. norma, weatherpatterns^ay ^^contributed 
significantly to the high leve ° j^ e ,j t \ ons that year. Conversely, 
ment in 1972 was poor, due to fought conditions that y 5ummer . 
rainfall was excessive during he past winter spring, an^^ 
Residual cover, which is vita y im P . t u: s spring and the near- 
was badly flattened or lodged •*“*^9 3 excellent 
SKS condtttons d for°mammaMan nest predators Nests this year tend 
r^^t^^u^anr^^rs^ grassy duff, often in 
relatively exposed cover situations. 
TWO management imp I YJu IdYe'made' to' promoYgoodYra inage 
-es. on sanctuaries. 
