Most of the replacement of the losses of all four seasons must take place during this period. Usually it is difficult to estimate how well each species has accomplished this replacement; for some try repeatedly until a brood is produced; others try one time and if not successful the species remains in short numbers for another year. Thus far it appears that no severe failures occurred in spite of some adverse weather.
Author: Thomas A. Imhof
Volume Number: 19 Year Published: 1971
Issue Number: 3
Page Number: 31
Link to article: http://birdlife.aosbirds.org/1971/Vol 19 No. 3_1971_p31-33.pdf
Link to the full issue of BirdLife: http://birdlife.aosbirds.org/1971/Vol 19 No. 3_1971.pdf