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Table 1 Bird sampling with the method of 50 m fixed radio count points

From: Environmental interactions between people and birds in semiarid lands of the Zapotitlán Valley, Central Mexico

Sampling date

Sampling area

Number of points

Number of repetitions

November 2015

La Monja

Eight points

Sampled for 2 days

July 2016

La Monja

Eight points

Sampled for 2 days

October 2016

La Monja

El Chichipe

San Martín

Eight points

Four points

Four points

Sampled for 4 days

Sampled for 4 days

Sampled for 4 days

May 2016

La Monja

El Chichipe

San Martín

Eight points

Four points

Four points

Sampled for 4 days

Sampled for 4 days

Sampled for 4 days

  1. The sampling was carried out in this way because the last two places were chosen later, selecting characteristics like the first: presence of the semi-terrace system, surrounded by the cacti forest; this in order to achieve a representative sampling at landscape scale