Exchanges 26 Apr. 1956 exchange 1 - White Gown A to Song Sparrow Z 22 Apr. -Z - Not much farther advanced. 23 Apr. - Banded at 1600 hrs. gave protest note when landed and also opened mouth wide without saying anything 23 Apr. - Both birds still in nest. One may be a little older than other. Beginning to show a white (a light) stripe down center of head. More noticeable on one than other. 24 Apr. - Still in nest at 0500. White head stripe shows up very well. Nearly fully feathered. 25 Apr. - Young gone, nest + area destroyed.