chimney swift

Last weekend my sister and I participated in a Chimney Swift count that is happening throughout Minnesota.  We had to sit for a half hour before and after sunset and watch and count how many swifts went down the chimney.  This Chimney is on the abandoned house that sits in the middle of our prairie.  The swifts have been nesting here for the last few summers; they are on a national decline as good nesting spots are becoming harder for them to find.  We counted 6 swifts.  Some places had in the hundreds!  Check out the video - watch quick, it shoots down right away...   I have been looking at this and now I think that the swift just ducks behind the chimney and doesn't go down!   But the first video it definitely drops in.