tree swallow and our nesting boxs

Yesterday was the first day that a pare  of tree swallow went in to our swallow nesting boxes it was really exciting. We have been trying to get tree swallows to nest in our nesting boxes and this year might be the year that they do nest in our nesting boxes. For the past week or two we have been watching tree swallows landing on the edge of the hole in nesting boxes and looking in from  time to time, but yesterday they went in multi able times in the morning wile I was watching it was very cool to see if the end up nesting in one of the nesting boxes if they do it will be very exciting.