Taking fees from children to look at animals and birds
Question

                I am a supervisor of activities in a women's centre and the management have suggested to me some activities that we can do for which we will take some money from the female students to attend these activities, such as selling some birds and animals, and these students will have the choice of buying or not buying, but before they can look at what there is in the hall, they will be asked to pay some money for admission. Please note that the students are young and have not reached the age of discernment, such as four or five years old. Is it permissible or does it come under the heading of selling unknown items?.
Praise be to Allah.
      Firstly: 

    The fuqaha’ differed concerning the validity of transactions 
    made by a minor. The most likely view is that it is permissible in two 
    cases: 

    (i)When it involves something of 
    little value; in which case it is valid even if the child is below the age 
    of discernment;

    (ii)When it is done with the 
    permission of his parent or guardian.

    Items of small value are things like a loaf of bread or a 
    piece of candy and the like. 

    It says in Mataalib Ooli al-Nuha (3/10): Except with 
    regard to items of little value, such as a loaf of bread or bunch of herbs 
    or a piece of candy and the like. 

    End quote. 

    See question number 
    97489. 

    Based on that, if the price of these birds is low or it is 
    being done with the knowledge of the child's guardian, it is permissible to 
    sell them to her. 

    Secondly: 

    With regard to the money taken for admission to the hall, if 
    it is in return for looking at the birds and animals, it is permissible 
    because it is payment for a benefit, which is looking and enjoying, like the 
    money charged for entering zoos, on condition that the time available for 
    looking is known in general terms, because one of the conditions of payment 
    is knowing the benefit for which payment is given. 

    If what is taken is in return for the possibility of buying, 
    and they do not get to enter to look and enjoy looking, then it is not 
    permissible, because this is paying money for nothing in return. 

    And Allah knows best.