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Table 3 Relative change in behaviour from day 3 to day 10 in response to the STI

From: Life-history and hormonal control of aggression in black redstarts: Blocking testosterone does not decrease territorial aggression, but changes the emphasis of vocal behaviours during simulated territorial intrusions

  

Placebo

Flut/Let

Non-vocal response

Time within 5 m

 

↓

 

Feather fluffing

 

↓

Vocal response

Number of songs

↑

↑

 

Song duration

↑

 
 

Pause A - B

↑

 
 

Freq bandwidth B (duration part B)

↓

 
 

Elements in A

↓

↓

  1. Downward arrows (↓) indicate a quantitative decrease of the behaviour from day 3 to day 10; upward arrows (↑) indicate a quantitative increase of the behaviour from day 3 to day 10. The emerging pattern suggests that both treatment groups reduced their territorial response during the STI from day 3 to day 10, but that this change mainly concerned non-vocal behaviours in blocker-implanted males, but vocal behaviours in placebo-implanted males.