Nest Defense Forager Nest 
Species site 1 type 2 type 3 spacing 4 Evidence 3 
Intraspecific aggression, nest 
movement away from competit' 
Bradley (1972, 1973); 
Bradley and Hinks 
(1968) 
Francoeur and Pepin 
(1978) 
Bradley (1972, 1973); 
(1968) 
