Importance of prey found in stomachs of adult Saltmarsh Sparrows during the breeding season (15 May-31 Aug) and during postbreeding and migration periods (Sep-Oct), expressed as relative volume (%) in the sample. Data from U.S. Fish and Wildlife Service, D.C.

Season  

Breeding

(n = 20)

Postbreeding

(n = 12)

Prey      
Insects/adults 31.3 35.7
  larval 10.8 0.5
  eggs 1.8  –
Amphipods   23.7 23.8
Mollusks   3.6 4.2
Spiders   20.8 5.4
Plant parts   30.3
Other   8 0.1