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Table 2 Response of Red-winged Blackbirds in Berks County, Pennsylvania to experimental model cowbird eggs added to their nests at different stages of the nest cycle and at control nests

From: Egg rejection behavior does not explain the lack of cowbird parasitism on an eastern North American population of Red-winged Blackbirds

Treatment

Rejected

Ejected

Buried

Deserted

Accepted

Total (n)

Rejected (%)

Building

9

3

4

2

6

15

60.0

Laying

1

1

0

0

13

14

7.1

Incubation

3

2

0

1

10

13

23.1

Total for laying and incubation

4

3

0

1

23

27

14.8

Total across treatments

13

5

4

3

29

42

31.0

Control

0

0

0

0

14

14

0.0