Figure 1
The average percentage and standard errors of bird species songs and calls identified by 49 citizen scientists in assessments taken before (“pre-assessment”) and after (“post-assessment”) a nine-week training session during 2019–2021 in Tracy Aviary’s breeding season bird survey program. The asterisk (*) represents statistical significance.
Figure 2
The averages and standard errors of (a) the number of bird species detected, (b) the number of birds detected, and (c) the estimated distance to birds in point surveys conducted by professional biologists and citizen scientists at the same point count locations during 2019–2021 in Tracy Aviary’s breeding season bird survey program (n = 566). The asterisk (*) represents statistical significance.