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Table 1 Body mass and arrival dates for Red-eyed Vireos outfitted with radio transmitters and fruit density at our El Cuyo and Isla Contoy study sites in 2016 and 2017

From: Stopover behavior of Red-eyed Vireos (Vireo olivaceus) during fall migration on the coast of the Yucatan Peninsula

Measure Site El Cuyo Isla Contoy
Individual body mass (g) 2016 17.3 ± 1.31 16.5 ± 0.880
2017 15.9 ± 1.05 14.5 ± 0.776
Arrival day (Julian date) 2016 266 ± 8.63 274 ± 9.26
2017 257 ± 7.60 262 ± 7.65
Total fruit density (#/m2) 2016 2.71 3.50
2017 2.45 3.31
Mean fruit density (#/(m2∙wk)) 2016 0.226 ± 0.157 0.269 ± 0.120
2017 0.175 ± 0.0647 0.207 ± 0.0694
  1. Data are expressed as mean ± 95% confidence interval, except for total fruit density, which is the sum of the fruit densities for the days Red-eyed Vireos were captured
  2. Mean fruit density use counts from the weekly census conducted across all of fall migration
  3. Sample sizes are six birds for Isla Contoy in 2016 and 15 birds for all other cases
  4. For the weekly fruit census, sample sizes are 12 and 14 for El Cuyo in 2016 and 2017, and 13 and 16 for Isla Contoy in 2016 and 2017. For all measures and years, the confidence intervals of the two sites overlap
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Avian Research

ISSN: 2053-7166