Anidación de aves y mamíferos arborícolas en el campus de la Universidad del Mar, Puerto Escondido, Oaxaca

Some faunistic species require certain characteristics of vegetation for the preparation of their nests and depending on their availabi- lity, nesting will occur more or less frequently. Some sites such as the Puerto Escondido campus of the Universidad del Mar (UMAR) represent an urban space of special interest because it maintains a green island character as surrounded by urban expansion offering potential for nesting fauna species. The aim was to learn about the nesting of birds and arboreal mammals present at the UMAR Puerto Escondido campus. From March to June 2024, we conducted systematic weekly walks in search of evidence of nests or the beginning of its construction. For each nest we recorded its location by using a GPS and the height in which they were observed, as well as the tree where they were built. A total of 104 nests were registered, 55 nests (52.8%) belonged to Sciurus aureogaster and the nests of Columbina inca and Pitangus sulphuratus were registered at a lower frequency. 60.3% (n=58) of the nests were recorded in heights below 10 m, 28% (n=27) were recorded in heights between 11 and 15 m, and the rest (11.7%, n=19) were found in heights higher than 16 m. Acacia cornigera was the tree species that presented the largest number of nests (n=21) recorded. The information resented in this work brings to the knowledge of the use of resources by faunastic species of interest, mainly because of the contribution to nesting behavior in anthropized environments.