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Table 5 The number of studies conducted for each study purpose

From: Effects of artificial light on bird movement and distribution: a systematic map

Purpose of study

Number of studies

Document and/or reduce bird aggregations or mortality

169

Deter birds

88

Document birds foraging under artificial light at night

47

Test ability to orient under artificial light conditions

40

Study effects of artificial light on bird distribution or habitat selection

40

Capture or count birds for wildlife research

38

Improve welfare or production of captive birds

36

Monitor or describe bird migration

35

Basic behavioural research

7

Study effects of artificial light on bird community

4

Document occurrence of a rare species

3

Study weight loss during nocturnal migration

2

Document unusual bird behaviours

2