Grooming her feathers
In three words you have painted a picture of a female bird preening herself. This form is about creating lasting images and you have done so in the first line.
dove obeying nature's laws
This line tells me which breed of bird. A dove - well there is all sorts of symbolism with this breed - biblical and of course a bird symbolizing peace. I do not think though this is the message you are portraying. This female Dove is acting as intended. Programmed by mother nature to preen and groom. Well, we know that there are necessary oils secreted from glads into the feathers to keep them healthy and to resist water. In this line I wonder what will be the 'ah ha' moment in the last line.
mates with next in line.
Alright, I was not expecting that. This line suggests that this grooming is a mating ritual. Next in line seems to mean that there are a line of male Doves waiting for similar attention. If that is so I am coming back in the next life as a Dove?