First Breeding Atlas
Species
Tetrads

0
7

1 - 30
50

31 - 45
133

46 - 60
126

more than 60
62
Second Breeding Atlas
Species
Tetrads

1 - 30
0

31 - 45
54

46 - 60
216

more than 60
108
New Breeding Atlas
Species
Tetrads

0
0

1 - 30
2

31 - 45
58

46 - 60
203

more than 60
115