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I want to run a binary logistic regression to understanding (modeling) factors affecting nest-site selection in a bird species..I measured 32 presence points and 64 absence points.

Instead of measuring random points as absence points, I measured points where I guessed the bird could build a nest. Is this measurement method correct?

Mostafa Ahmadi
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  • Can you describe your sampling process a bit more for the sites with nests? – dimitriy Feb 12 '23 at 22:01
  • The variables I measured are not Environmental like soil types or vegetation types. I measured Nest detection chance, Nest height from ground, Nest to ceiling height and more – Mostafa Ahmadi Feb 12 '23 at 22:21
  • I think if you were to sample sites where birds could nest, and some of them turned out to have nests, that would be OK. Walk me through your process of finding sites with nests. – dimitriy Feb 13 '23 at 00:37
  • Actually sites with nests are exact places that nests located there.. For example, behind the signs of shops or on the balconies of houses. – Mostafa Ahmadi Feb 13 '23 at 12:04

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