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38. Bernard, P. Reapparition du Jaseur de Boh^me {Ampelis garrulus) 
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40. Berry, W. On the nesting of the Hawfinch {Coccothraustes cocco- 
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41. Bertling, a. E. L. On the hatching and rearing of the Brush 
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41 A. Bertoni, a. de W. Contribucion para el conocimiento de las Aves 
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42. Besserer, F. von. Nuinenius arcuatus L. als Brutvogel in Bayern. 
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44a. . Note sur les formes du genre Dendrocoptes. Op. cit. ix, 
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45. . Revision des genres et des esp^ces de la famille Accentoridce. 
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46. . Note preliminaire sur les formes palearctiques orientales du 
genre Alauda Linn. T. c. pp. xxii-xxxi. [Alaudidoe.^ 
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48. . Uebersicht der Formen der Gattung Ithaginis Wagler. [Trans- 
lation by R. Schmidt.] J. Ornith. 1904, pp. 70-86. 
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50. BiCKERTON,W. A review of Hertfordshire Ornithology. Tr. Hertfordsh. 
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51. . Notes on birds observed in Hertfordshire during the vear 1902. 
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51a. Biedermann. W. Die Schillerfarben bei Insekten und Vogeln. 
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52. BiRTWELL, F. J. Observations on color changes in the genus Buteo, 
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53. Blaauw, F. E. On the breeding of some of the Waterfowl at Gooilust 
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54. Blasius, R. Gustav Radde [obituary]. J. Ornith. 1904, pp. 1-49 
[portrait]. 
