Oreotrochilus chimborazo


To elaborate our model we produced five pseudoreplicas of the only point locality we found for this species in the country in EBIRD. The new points were located at approximate 1-2 km north, northeast, east, southeast and south from the original locality. The original locality was placed at 3,384 m which is slightly below the reported elevational range for this species in Colombia (3,600-4,600 m).

The habitat suitability model generated in Maxent showed a few sparse areas suitable in climatic terms for this species in the Central Andes and the Eastern Andes. Areas not near Chiles/Cumbal volcanoes complex were excluded from the potential distribution map of this hummingbird.

Areas classified as marginally suitable in our map seem isolated from the main group of areas in the Chiles/Cumbal volcanoes complex and may be less likely to be occupied by this hummingbird.


Regularized training gain is 5.319, training AUC is 0.999, unregularized training gain is 6.298.

Algorithm converged after 240 iterations (1 seconds).

The follow settings were used during the run:

6 presence records used for training.

10006 points used to determine the Maxent distribution (background points and presence points).

Environmental layers used (all continuous): bio10co bio11co bio12co bio13co bio14co bio15co bio16co bio17co bio18co bio19co bio1co bio2co bio3co bio4co bio5co bio6co bio7co bio8co bio9co

Regularization values: linear/quadratic/product: 1.000, categorical: 0.560, threshold: 1.940, hinge: 0.500

Feature types used: linear

responsecurves: true

jackknife: true

maximumiterations: 2000

'Equal Training Sensitivity and Specificity' and 'Equate Entropy of Thresholded and Original Distributions' thresholds and omission rates:

42.229-12.854-Cumulative threshold

0.610-0.065-Logistic threshold

0.001-0.005-Fractional predicted area

0.000-0.000-Training omission rate