Table 2 Estimation of the Aphanoascus keratinophilus minimal strain dispersion and the minimal density of strains per 100 m2 area most intensively used by rooks around colonies.

From: Dispersal of Aphanoascus keratinophilus by the rook Corvus frugilegus during breeding in East Poland

Colony site

Number adult birds

Total pellet production

Pellets with at least one strain Aphanoascus keratinophilus

Minimal strains of Aphanoascus keratinophilus dispersion/day

Minimal density strains of Aphanoascus keratinophilus/100 m2

Sielec

1002

96492.6

19781.0

184.9

0.006

Chojno Nowe

792

76269.6

15635.3

146.1

0.005

Siennica

542

52194.6

10699.9

100.0

0.003

Wola Uhruska

326

31393.8

6435.7

60.1

0.002

Chelm

324

31201.2

6396.3

59.8

0.002

Wierzbica

118

11363.4

2329.5

21.8

0.001