RACING PIGEONS â IMPACT OF RAPTOR PREDATION

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RACING PIGEONS – IMPACT OF RAPTOR PREDATION Report to SCOTTISH NATURAL HERITAGE & SCOTTISH HOMING UNION I. Henderson, D. Parrott & N. Moore Central Science Laboratory March 2004
Page 1: RACING PIGEONS - IMPACT OF RAPTOR P
Page 6 and 7: 3.3.1 Methods .....................
Page 9 and 10: 1. EXECUTIVE SUMMARY 1.1 INTRODUCTI
Page 11 and 12: 1.3 REPORTED LOSSES TO SPARROWHAWKS
Page 13 and 14: ings) for those pigeons last releas
Page 15 and 16: novel area of investigation was ide
Page 17 and 18: spatial plot of sparrowhawk activit
Page 19 and 20: eginning of the season, the racing
Page 21 and 22: Of the 1,283 breeding pairs in the
Page 23 and 24: In southern Scotland there was cons
Page 25 and 26: the proportion of domestic pigeon e
Page 27 and 28: It was estimated that this annual c
Page 29 and 30: ace seasons. A further 27% of young
Page 31 and 32: Shawyer et al. (2000) reported obse
Page 33 and 34: which renders individuals more pron
Page 35 and 36: 3.2 REPORTED LOSSES IN 2002 This pa
Page 37 and 38: Figure 3.1. Distribution of SHU mem
Page 39 and 40: Table 3.2 Loft populations and tota
Page 41 and 42: a greater percentage lost in Dundee
Page 43 and 44: etween 1986 and 1996. The analysis
Page 45 and 46: Glasgow loft, which spanned the gre
Page 47 and 48: Ayrshire Loft 100 80 60 40 20 0 198
Page 49 and 50: 4.2 RESULTS 4.2.1 Reported Losses R
Page 51 and 52: Figure 4.1. Summary of reported los
Page 53 and 54:
Of the 32 lofts, 13 loft-owners rep
Page 55 and 56:
At the level of the individual loft
Page 57 and 58:
of natural cliffs) and also as a re
Page 59 and 60:
Table 5.2. Regional distribution of
Page 61 and 62:
aced over this period in the middle
Page 63 and 64:
few were from birds either confirme
Page 65 and 66:
Table 5.4. Grouped locations of SHU
Page 67 and 68:
irds were also categorised as poten
Page 69 and 70:
5.4.2 Results method 1: A total of
Page 71 and 72:
6. REVIEW OF DETERRENTS 6.1 INTRODU
Page 73 and 74:
The five most frequently used techn
Page 75 and 76:
Table 6.3. Pigeon-based deterrents
Page 77 and 78:
Human disturbance Human activity ca
Page 79 and 80:
Visual deterrents Static visuals, s
Page 81 and 82:
For the same reasons as discussed f
Page 83 and 84:
Habitat modification Habitat modifi
Page 85 and 86:
farmers (e.g. woodpigeons) or at lo
Page 87 and 88:
The loft-based trials assessed whet
Page 89 and 90:
6.6 OVERVIEW 6.6.1 Loft-based deter
Page 91 and 92:
to be ineffective. Some degree of e
Page 93 and 94:
7.1.2 Old Birds A similar trial of
Page 95 and 96:
7.3 DISCUSSION Groups of old birds
Page 97 and 98:
very wide range of estimates for to
Page 99 and 100:
number of lofts over which individu
Page 101 and 102:
10. References Allan, D.S. 2001. Ra
Page 103 and 104:
Dixon, A., Richards, C., Lawrence,
Page 105 and 106:
McNamara, K., O’Kiely, P., Whelan
Page 107 and 108:
Redpath, S.M., Clarke, R., Madders,
Page 109 and 110:
ANNEX 1: Method for estimating the
Page 111 and 112:
Figure 1. National Peregrine Survey
Page 113 and 114:
Correction factor for over-represen
Page 115 and 116:
Correction factor for over-represen
Page 117:
Table 4. Values for the four parame
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