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Table 2 Overview of all populations of the highland Zosterops poliogaster and the lowland Z. abyssinicus used for bioacoustic analyses; given are running numbers (congruent with Figure  4 ), name of each locality, number of contact calls analysed, date of recording and the coexistence type of each population

From: The evolution of contact calls in isolated and overlapping populations of two white-eye congeners in East Africa (Aves, Zosterops)

No

Locality

N*

N

Date

Type

Zosterops poliogaster

1

Mt. Kasigau

>50

73

02-2012

parapatric

2

Taita Hills-Ngangao

>50

190

02-2012

parapatric

3

Taita Hills-Mbololo

>50

172

02-2013

parapatric

4

Chyulu Hills - Simba valley

>100

248

02-2013

parapatric

5

Chyulu Hills - Satellite

>100

301

02-2012

parapatric

6

Nairobi

>50

205

02-2013

sympatric

7

Mukurwe-ini

>50

174

08-2013

allopatric

8

Mt. Kenya

>50

114

08-2013

allopatric

9

Mt. Kulal

>10

17

02-2010

allopatric

Zosterops abyssinicus

10

Rukanga

>100

259

08-2013

parapatric

11

Mwatate

>150

359

02-2013

parapatric

12

Dembwa

>100

166

02-2013

parapatric

13

Mtito Andei

>50

129

02-2013

parapatric

14

Kibwezi

>100

301

02-2012

parapatric

15

Hunters Lodge

<50

78

02-2012

allopatric

16

Machakos

>50

160

08-2013

allopatric

17

Wikililye

>50

133

08-2013

allopatric

18

Mutito

>10

19

08-2013

allopatric

19

Oldonio Sabuk

>50

93

08-2013

allopatric

20

Mumoni Hills

>50

121

02-2013

allopatric

6

Nairobi

>20

41

02-2013

sympatric

  1. *N based on estimates, taking into account possible multiple recordings of the same individual.