The study of the species and their interactions in the form of network allows the description of key aspects of the structure and properties that determine the stability of these ecological systems and therefore, the consequences of shocks. In this study we estimated the richness of species of hummingbirds and plants, population density of the species of hummingbirds and generated networks of interaction hummingbird-flower. The study was conducted during the months from January to March 2017 in the Biosphere Reserve El Ocote jungle. 4 linear paths were used with variable measures journey road engineer Armando Zebadúa 2.5 km, San Joaquin t. Road 3.0 km, t. Guayabal 1.7 km and t. Zapote 3.2 km away. This network was composed of 16 species of hummingbirds and 29 plants. Density was estimated for 11 species of hummingbirds. Phaethornis striigularis presented higher density ranging from 73.40˂92.92˂171.95 individuals/km2, followed by Amazilia candida with 81.95˂99.86˂78.8 individuals/km2. On the contrary the species that had a lower density were Amazilia cyanocephala with0.10˂0.59˂3.66 individuals per km2, Chloristilbon canivetii with 2.73˂0.73˂ 10.12 individuals/km2 and Campylopterus hemileucurus with ranges of1.64˂3.84˂9.04 individuals per km2. For the analysis of networks of interaction hummingbird-flower, we find a network of 49 nodes and 127 connections. This network was composed of 16 species of hummingbirds and 29 plants.