Patricio Robles Gil / Lightning storm at night over the Sierra del Carmen range, Mexico

Patricio Robles Gil / Monarch (Danaus plexippus) butterfly, mass flying in wintering grounds, Monarch butterfly Biosphere Reserve, Michoacan, Mexico

Patricio Robles Gil / Semi-aquatic communities of Water Lilies in a wetland near the Tamesi River, south Tamaulipas, Mexico

Tim Fitzharris / Monarch (Danaus plexippus) butterflies on lupine, Michoacan, Mexico

Rick Bowers/ BIA / Wood Stork (Mycteria americana) juvenile flying, Mexico

Rick Bowers/ BIA / Greyish Saltator (Saltator coerulescens) juvenile, Puerto Vallarta, Jalisco, Mexico

Donald M. Jones / Yucatan Jay (Cyanocorax yucatanicus) juvenile, Sian Ka'an Biosphere Reserve, Mexico

Donald M. Jones / Yucatan Jay (Cyanocorax yucatanicus) juveniles, Sian Ka'an Biosphere Reserve, Mexico

Donald M. Jones / Reddish Egret (Egretta rufescens) white morph flying, Sian Ka'an Biosphere Reserve, Mexico

Donald M. Jones / Magnificent Frigatebird (Fregata magnificens) juvenile, Sian Ka'an Biosphere Reserve, Mexico

Norbert Wu / Cottonmouth Jack (Uraspis secunda) school swimming near seamount, Revillagigedos Islands, Mexico

Norbert Wu / Lava and mud flow frozen on barren volcanic crater, Socorro Island, Revillagigedos Islands, Mexico