Trail Effect of light in photography

I was on a visit to nearby village. It was month of November, i was standing in the balcony and noticed that flies and insects are roaming around the street night lamp. I actually started to capture the light only. but after one shot i found that i can capture trailing effect of light reflected from insects. Then i set exposure time to 1 sec. and I got this result, This is first time i got trailing effect of light.
Camera : Canon EOS 550D, f-stop - f/5.6, exposure time : 1 sec., ISO : 800, exposure bias : -1 step, focal length - 55 mm, No flash

butterfly - They hate each other

These two butterfly sitting back to back in front of my office window on tree branch. Tried to capture with few settings. After selecting one among few, I crop this image and worked on Curve and increased saturation to get bright Color of Butterfly.

Camera : Canon EOS 550D, ; f-stop - f/5.6 ; exposure : 1/160 sec. ; ISO - 400 ; focal length - 250 mm, Flash : on ; exposure : aperture priority

shadow

This photograph is taken at the morning time at 07.30 hrs.. I noticed that my daughter was standing in the door and wanted to capture the shadow. half of her face with the light and half of the face is just shadow. I tried few settings with my cam. at last i got result what i wanted.

camera : Canon EOS 550D ; f-stop - f/11 ;  exposure : 1/250 ; ISO : 100 ; focal length : 39 mm