SCOTLAND: The Big Picture / RSPB biologists ringing White-tailed eagle (Haliaeetus albicilla) Isle of Lewis, Outer Hebrides, Scotland, UK, May.

SCOTLAND: The Big Picture / White-tailed eagle (Haliaeetus albicilla) chick being ringed by RSPB biologists on the Isle of Lewis, Outer hebrides, Scotland, UK, May.

Jaymi Heimbuch / Marbled Murrelet (Brachyramphus marmoratus) biologists using drone to locate nests, Newport, Oregon

Jaymi Heimbuch / Marbled Murrelet (Brachyramphus marmoratus) biologists using drone to locate nests, Newport, Oregon

Jaymi Heimbuch / Marbled Murrelet (Brachyramphus marmoratus) biologists using drone to locate nests, Newport, Oregon

Naskrecki & Guyton / White-backed vultures (Gyps africanus) feed in a frenzy at a waterbuck carcass (Kobus ellipsiprymnus), Gorongosa National Park, Mozambique. Waterbuck are large animals with tough hides, and in Gorongo...

Karine Aigner / Biologists researching song birds, weighing and banding birds caught in mist nets. Here birds are kept in breathable fabric bags while they are waiting to be examined. Block island, Rhode Island, US...

Jen Guyton / Biologists attaching a solar-powered GPS transmitter between the shoulders of a white-headed vulture (Trigonoceps occipitalis), using Teflon ribbon that fits like a harness across the vulture's chest....

Jen Guyton / Biologist Teague Scott releases a white-backed vulture (Gyps africanus) that has just been fitted with wing tags. Biologists work quickly to minimize the stress that these birds experience during capt...

Jen Guyton / Ayla Kaltenecker releases an African fish eagle (Haliaeetus vocifer) that was captured in a leg-hold trap to be studied by raptor biologists. The researchers took measurements and a blood sample befor...

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) nest in restored salt pond with shells laid by biologists to increase camouflage possibilities for adults, Eden Landing Ecological Reserve, Union City, Bay Area, Cali...

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) biologists, Karine Tokatlian and Ben Pearl, collecting oystershells to spread in salt pond, which snowy plovers can use for camouflage, Eden Landing Ecological Reserv...