Works in seabird research since 1979, as full-time researcher since 1985 to present. Between 1992-1999 as General Director in Mexico's federal government environmental sector. Focuses in seabird breeding-feeding ecology and conservation, mainly in the Gulf of California and Gulf of Mexico, generating long-time series of biological parameters to support demographic and ecosystem models for management decisions. Has published about 60 scientific papers and book chapters, 30 public education articles and chapters, and is coauthor of 3 public education books. Has been advisor in several undergraduate and graduate thesis. Has been advisor for several Mexican government environmental agencies and international NGOs.