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Table 3 Overview of experimental studies of plumage polymorphism in cuckoos

From: Color plumage polymorphism and predator mimicry in brood parasites

Host

Locality

Model

Mimic

Aggression

  

Species

Presence

Morph

Frequency

Calls

Attacks

RW

UKa

Sparrowhawk

1

Gray

99

50

  

Kestrel

1

Rufous

1

38

GRW

CZ

Sparrowhawk

1

Gray

90

65

17

  

Kestrel

0

Rufous

10

79

21

GRW

SK

Sparrowhawk

0

Gray

60

76

  

Kestrel

1

Rufous

40

24

GRW

HU

Sparrowhawk

0

Gray

40

93

50

  

Kestrel

1

Rufous

60

97

73

  1. a Estimated according to information from [5]: 20 years data, each year ~10 cuckoo females, total “only one rufous female in two of the years”, i.e., 2/200 = 1%.
  2. Localities were situated in United Kingdom (UK; [5]), Czech Republic (CZ; [4]), Hungary (HU; [4]) and Slovakia (SK; this study). Data are ordered from gray-morph dominated localities to those where the rufous-morph is more common. The presence (0/1) of models for each cuckoo morph (N. B. Davies, M. Honza, pers. comm.), frequency of each cuckoo morph (%), and responses of reed warblers (RW) and great reed warblers (GRW) to each morph are shown. Responses were measured either as proportion of host pairs that performed particular behavior (UK, CZ, HU), or as a proportion of contact attacks from the gray–vs.–rufous cuckoo paired treatment (SK, this study; tested pairs attacked each dummy at least once, thus, eliminating information potential of categorical assessment of host behavior, see also Table 1). See Discussion for details.