Least Storm Petrel
- kingdom: Animalia
- phylum: Chordata
- class: Aves
- order: Procellariiformes
- family: Hydrobatidae
- genus: Oceanodroma
- species: Oceanodroma microsoma
- Chacarita
- Puntarenas
- Quepos
Puntarenas
Costa Rica- Salinas
Guayas
Ecuador- Cabo San Lucas
- La Paz
- San José del Cabo
- Todos Santos
Baja California Sur- Manzanillo
Colima- Acapulco
Guerrero- San Patricio
Jalisco- San Blas
Nayarit- Mazatlán
Sinaloa- Puerto Peñasco
Sonora
Mexico- Ancón
Panamá
Panama- Arivaca Junction
Arizona- La Jolla
- Malibu
- Newport Beach
- Pacific Grove
California- Silver City
New Mexico
United States