Lancaster, Mass.
1901
May
  Vireo gilvus: May 14, 2 in full song; May 15, 10 in full song; May 16, 6 in full song; May 18, 1 in full song; May 19, 1 in full song; May 20, 1; May 23, 2 in full song; May 24, 1 in full song; May 30, 3 in full song
  Ampelis cedrorum: May 17, 1; May 24, 4 in a flock; May 30, heard
  Petrochelidon lunifrons: May 15, 20 in a flock; May 20, 50 in flock; May 23, 1
  Hirundo erythrogaster: May 15, 4; May 16, 6; May 20, 12; May 30, 1
  Cotile riparia: May 15, 12; May 16, 8; May 23, 30 in a flock; May 29, 15 in a flock Flying all day over pond hole in front of our house; May 30, 27 in a flock
  Piranga erythromelas: May 15, 1; May 24, 1 in full song
  Carpodacus purpureus: May 6, 1 in full song; May 14, 1 in full song; May 15, 3 in full song; May 16, 3 in full song; May 17, 1 in full song; May 18, 1 in full song; May 20, 2; May 23, 2 in full song; May 24, 1 in full song; May 30, 3 in full song
  Spinus tristis: May 15, 2 male and 2 female in a flock in full song; May 24, 2 in full song; May 30, 1 in full song
  Passerculus savanna: May 15, 1; May 16, 1
  Zonotrichia leucophrys: May 17, 2 in a flock (Miss Langmaid & Miss Howe)
 Zonotrichia albicollis: May 15, 2; May 16, 4; May 20, 1
  Spizella socialis: May 14, 2 in full song; May 15, 20 in full song; May 16, 12 in full song; May 19, female on nest; May 23, 4; May 24, 6 in full song; May 29, 2 in full song; May 30, 8; May 31
 Spizella pusilla: May 15, 1 in full song; May 16, 6, 1 in full song
  Melospiza melodia: May 6, 2 in full song; May 14, 1 in full song; May 15, 20 in full song; May 16, 15 in full song; May 23, 2 in full song; May 24, 1 in full song; May 29, 1 in full song; May 30, 4 in full song; May 31, 3 in full song
 Melospiza lincolni: May 16, 1 in alders bordering old lane near Cemetery
 Pipilo erythropthalmus: May 15, female; May 16, 4 in full song
  Habia ludoviciana: May 14, 1 in full song; May 15, 3 in full song; May 16, 3 in full song; May 20, 3 in full song; May 23, 2 in full song; May 24, 2 in full song; May 30, 1 in full song in Cemetery; May 31, 1 in full song in Cemetery
 Passerina cyanea: May 15, male adult; May 30, 1 in full song; May 31, 1 in full song
  Dolichonyx oryzivorus: May 14, 2 in full song; May 15, 8 in full song; May 16, 6 in full song; May 19, 2 in full song; May 23, 6 in full song; May 24, 4 in full song; May 30, 6 in full song; May 31, 4 in full song
  Molothrus ater: May 16, heard; May 17, heard; May 20, heard; May 24, heard; May 30, heard; May 31, heard
  Agelaius phoeniceus: May 15, 4 in full song; May 16, 4 in full song; May 20, 6; May 23, 3; May 24, 6
  Sturnella magna: May 6, 2 in full song; May 14, 1 in full song; May 15, 6 in full song; May 16, 6 in full song; May 19, 1 in full song; May 20, 6 in full song; May 23, 2 in full song; May 24, 2 in full song; May 29, 2 in full song; May 30, 3 in full song; May 31, 3 in full song
  Icterus galbula: May 14, 2 in full song; May 15, 10 in full song; May 16, 8 in full song; May 20, 8 in full song; May 23, 6 in full song; May 24, 4 in full song; May 29, 4 in full song; May 30, 4 in full song; May 31, 4 in full song
  Quiscalus aeneus: May 15, 1; May 16, 4 in a flock; May 20, 2 in a flock
  Corvus americanus: May 15, 6; May 16, 8; May 20, 4; May 23, 2; May 24, 2
  Cyanocitta cristata: May 15, 4; May 16, 4
  Tyrannus tyrannus: May 14, 1; May 15, 8; May 16, 8; May 20, 8; May 23, 4; May 30, 2
  Sayornis phoebe: May 15, 1; May 20, 1; May 24, 1 in full song
  Contopus virens: May 16, 1 in full song; May 24, 1 in full song in Cemetery; May 31, 1 in full song Miss Holman's
  Empidonax minimus: May 6, 1 in full song; May 14, 2 in full song; May 15, 20; May 16, 15; May 20, 8; May 23, 4 in full song; May 24, 3 in full song; May 29, 3 in full song; May 30, 4 in full song
34