(8) Delicacies of seagulls
When the spring turns towards summer, another insect, Ceraclea perplexa of the family caddisflies (trichoptera), starts to eclose, or hatch, in big swarms. Sometimes they appear in masses so big that if you watch them against the sunset they form a fog-like cloud. Ceracleas are also a delicacy of trout, as adults, maggots, and pupas. As the caddisflies start swarming, some winged connoisseurs come out to feed on them. Besides the common tern (Sterna hirundo), the common gull (Larus canus), and the black-headed gull (Larus ridibundus), you can see a fairly-rare little gull (Hydrocoleus minutus or Larus minutus) flying almost on the surface of water or flitting about catching flying caddisflies. Also the caddisfly sp. Neureclipsis bimaculata, shown in the picture below, is a favorite food for fish and birds and is imitated by fishermen making flies to lure trout.
The little gull resembles the black-headed gull, but it is smaller, its wings are rounded, and its flight is similar to a tern's.
Common tern, distinctive for its deeply forking tail
The black-headed gull is clearly bigger than little gull.
Common gull has often nested on the rock in Lokkilammikko pond, here in Aurinkoranta