88 THE WILSON BULLETIN— June, 1921 



Chipping Sparrow (SpiscUa p. passerina (Bech.)) — 12 juvs. 

 Slate-colored Jiinco (Junco h. hyemalis (Linn.)) — 9 juvs. 

 Song Sparrow (Melospiza m. melodia (Wils.)) — 11 juvs. 

 Cliff Swallow {Petrochclidon I. lunifrons (Say)) — 14 juvs. 

 Cedar Waxwing (Bombi/cilla cedrorum Vieill.) — 14 juvs. 

 Red-eyed Vireo (Vireosylva olivacea (Linn.)) — 4 juvs. 

 Redstart (Setophaga ruticilla (Linn.)) — 1 juv. 

 House Wren (Troglodytes a. aedon (Vieill.)) — 4 juvs. 

 Hermit Thrush (Hylocichla guttat-a pallasi (Cab.) — 6 juvs. 

 Robin (Plancsticus m. migrator'ms (Linn.)) — 11 juvs. 



Reasons for banding birds. 



It may now be proper to inquire what we may reason- 

 ably be expected to learn from the banding of birds. A 

 good deal has been written about this in one place and 

 another so that a brief resume is all that seems necessary 

 at this time. In the following paragraphs the writer has 

 attempted to set forth by a series of questions, followed in 

 some cases by answers, something of what has been learned 

 and what may ibe learned from the, as yet comparatively 

 meager, information which is now at hand. 



1. Do birds return to the same nesting area for several 

 seasons? 



An interesting record illustrating this point is given in 

 a recent number of Bird-Lore (XXII, No. 4, 1920, 219). 

 At Lake Forest, Illinois, on May 25, 1919, a male Hose- 

 breasted Grosbeak was banded (No. 49.^10) and then per- 

 mitted to escape. He mated and assisted in rearing a 

 brood of young during the summer. On May 2, 1920, No. 

 49510 returned to the same place and was again taken by 

 the individual who captured him the preceding summer.. 



Even with the limited data now at hand similar cases 

 might be cited with other species of birds. 



2. Do birds return to the same area to winter year 

 after year? 



Numerous instances of such retunis might be cited but 

 one of Baldwin's records will answer tlie question for at 

 least one White-throated Sparrow. This individual was 

 banded on February 27, 1915, at Thomasville, Georgia, No. 

 15053) and was taken in a trap the following March at the 

 same place. During the interim the bird had presumably 



