Breeding biology and longevity of Russet-crowned Motmots in central Mexico
Bibliographic record
Abstract
ABSTRACT Motmots, with their distinctive racketed-tails, represent one of the most easily recognized tropical birds, yet little is known about the basic natural history of most species in the family Momotidae. We report basic breeding biology and longevity of Russet-crowned Motmots (Momotus mexicanus), a medium-sized Neotropical bird that ranges from northwest Mexico to central Guatemala. We monitored nest success of eight pairs from 1 May to 17 July 1998 in tropical deciduous forests in central Mexico. Motmots laid an average of 4.1 eggs and incubated for approximately 20 d. Four of eight nests fledged young. Of these four nests, average hatching success was 69% and average fledgling success was 56%. The mean duration of the nestling period at three nests was 33.7 d. Based on the recapture of one individual bird in April 2008, we provide a longevity estimate that Russet-crowned Motmots can survive at least 11 yr in the wild. These data on nesting success and longevity add to our limited knowledge of the natural history of this understudied species. Los momótidos, con su distintivo rabo, representan unas de las aves tropicales más fáciles de reconocer. Sin embargo, se conoce poco de la historia natural de la mayoría de las especies que pertenecen a dicha familia. Momotus mexicanus es un ave neotropical de tamaño mediano, que se distribuye desde el norte de México hasta la parte central de Guatemala. Informamos sobre la longevidad y biología básica reproductiva de esta especie. Monitoreamos el éxito de anidamiento de ocho pares de estas aves desde el 1 de mayo al 17 de julio de 1998, en un bosque tropical deciduo de la parte central de México. Las aves produjeron una camada promedio de 4.1 huevos e incubaron por aproximadamente 20 días. De cuatro de ocho nidos volaron pichones. De los cuatro nidos exitosos el promedio de éxito de eclosión fue de 69% y el de volantones de 56%. El periodo medio de permanencia de la pichonada en el nido fue de 33.7 días (en tres nidos). Basándonos en la recaptura de un individuo en abril de 2008, estimamos una longevidad promedio de 11 años de la especie en el estado silvestre. Estos datos sobre el éxito de anidamiento y longevidad, aportan a los conocimientos limitados sobre la historia natural de esta especie que ha sido poco estudiada.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".