Sam Hobson / Blood samples collected by scientists working with urban goshawks (Accipiter gentilis). Berlin, Germany, May 2014. Nominated in the Melvita Nature Images Awards competition 2014.

Jabruson / Hammer Headed bats (Hypsignathus monstrosus) in gloved hand - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 12...

Doug Gimesy / Platypus (Ornithorhynchus anatinus) blood taken from an anaesthetised platypus captured in field. It will be put into a test tube for later analysis. Dartmouth, Victoria, Australia. May 2018.

Doug Gimesy / Scientist taking blood sample from Platypus (Ornithorhynchus anatinus) Dartmouth, Victoria, Australia. May 2018. Model release supplied.

Doug Gimesy / Scientist taking blood sample from Platypus (Ornithorhynchus anatinus) Dartmouth, Victoria, Australia. May 2018. Model release supplied.

Doug Gimesy / Two researchers examine an anaesthetised platypus (Ornithorhynchus anatinus). Body measurements, blood, urine and DNA samples will be taken, and a temporary radio transponder could be glued to its t...

Theo Bosboom / Scientists with stranded Guillemot (Uria aalge), taking a blood sample to investigate the health of the bird and to control if it is ready to be released, Texel, the Netherlands. February 2019.

Francisco Marquez / Researcher collecting a blood sample from a Greater flamingo (Phoenicopterus ruber) juvenile's leg during the ringing process, Fuente de Piedra lagoon, Malaga, Spain. August.

Karine Aigner / Blood sample collecting from Kirkland's warblers (Setophaga kirtlandii) Cat Island, Bahamas. April 2017.

David Perpinan / Field workers collecting blood from Blue-fronted amazon parrot (Amazona aestiva) chicks, Pantanal, Mato Grosso do Sul, Brazil.

Ashley Cooper / Medecins sans Frontieres clinic in Makhanga testing local people, many of whom now have malaria. A result of the January 2015 floods, the drying up flood waters provided an ideal breeding grounds for...

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...