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Table 1 Numbers of Blakiston’s fish owls examined, by sampling locations and periods

From: Recent fragmentation of the endangered Blakiston’s fish owl (Bubo blakistoni) population on Hokkaido Island, Northern Japan, Revealed by Mitochondrial DNA and Microsatellite Analyses

Period

Sampling locations

Total

Ishikari

Hidaka

Daisetsu

Akan

Konsen

Shiretoko

pre–1964

[6]

1 [1]

[3]

[3] 3*

 

[2]

19

1965–1980

 

[1]

[2]

3

3

1 [6]

16

1981–1988

 

[1]

2

3 [1]

7 [1]

4 [3]

22

1989–1996

 

1

17

12

21 [1]

29

81

1997–2004

  

25

21

36

44

126

2005–2012

 

17

29

20

39

70

175

Total

6

22

78

66

108

159

439

  1. Numerals without brackets show numbers of tissue samples, and those with brackets indicate numbers of feather roots from stuffed samples. Asterisks indicate archeological bone samples.