The 1997 El Niño/Southern Oscillation (ENSO 97-98):
Biological observations possibly related to El Niño
 
 Central America
 
Marine life
Birds
Disease
Other
September 06 
17
    May-Sep 
01 
06 
20
October       03 
15 
20 
November 09 
13 
    09 
13 
19
December       03 
22
January 25     25
February       03 
24
March       09 
11 
19 
23
April 01 
14
     
May   30   13 
26 
05
June     09
30
 
July     17
30
 
 
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