Hanne & Jens Eriksen / Lesser kestrel {Falco naumanni} female hovering, Sohar, Oman

Konrad Wothe / Lesser Kestrel (Falco naumanni) female flying, Turkey

Oscar Dewhurst / Lesser kestrel (Falco naumanni) female in flight. Extremadura, Spain. March.

Oscar Dewhurst / Lesser kestrel (Falco naumanni) male in flight. Extremadura, Spain. March.

Anup Shah / Lesser kestrel (Falco naumanni) flock of males and females roosting in a tree,Masai Mara National Reserve, Kenya.

Loic Poidevin / Lesser Kestrel (Falco naumanni) pair on branch, Masai Mara, Kenya. March.

Roger Powell / Lesser kestrels (Falco naumanni) pair at nest entrance, female courtship preening the male birds head. Extremadura, Spain.

Roger Powell / Lesser kestrels (Falco naumanni) pair at nest entrance, Extremadura, Spain.

Roger Powell / Two male Lesser kestrels (Falco naumanni) in pursuit flight, one driving off the other from its nesting territory. Extremadura, Spain.

Roger Powell / Lesser kestrel (Falco naumanni) male flying past during courtship with Mole cricket in its talons. Extremadura, Spain.

Roger Powell / Lesser kestrel (Falco naumanni) male in courtship flight display, Extremadura, Spain.

Roger Powell / Lesser kestrel (Falco naumanni) male in flight with lizard prey, Extremadura, Spain.

Roger Powell / Lesser Kestrel (Falco naumanni) male flying past. Extremadura, Spain. April.

Roger Powell / Lesser Kestrel (Falco naumanni) female flying in front of a church wall. Extremadura, Spain.

Roger Powell / Lesser kestrel (Falco naumanni) male returning to nest site in church wall. Extremadura, Spain.

Roger Powell / Lesser kestrel (Falco naumanni) female returning to nest site in church wall. Extremadura, Spain.

Roger Powell / Pair of Lesser Kestrels (Falco naumanni) mating at the entrance to their nest, Alcantara, Extremadura, Spain.

Roger Powell / Pair of Lesser Kestrels (Falco naumanni) mating at the entrance to their nest, Extremadura, Spain.

Roger Powell / Pair of Lesser kestrels (Falco naumanni) female preening male at entrance to nest site, Extremadura, Spain. March.

Juan Carlos Munoz / Lesser kestrel (Falco naumanni) on old roof, La Serena, Extemadura, Spain, April.

Nick Garbutt / Lesser ketrel (Falco naumanni) in flight. Ndutu area, Ngorongoro Conservation Area NCA / Serengeti National Park, Tanzania.

Hanne & Jens Eriksen / Lesser kestrel (Falco naumanni) male in flight, Oman, April.

Hanne & Jens Eriksen / Lesser kestrel (Falco naumanni) male perched, Oman, April.

Loic Poidevin / Lesser kestrel (Falco naumanni) in flight, Saint Pons des Mauchiens, France, April

Roy Mangersnes / Female Lesser kestrel (Falco naumanni) inspecting nest with the male waiting, the nest is a hollow tile on a barn roof, Lleida, Spain, April.

Roy Mangersnes / Lesser kestrel (Falco naumanni) pair mating in front of nesting tile on a barn roof, Lleida, Spain, April.

Roy Mangersnes / Male Lesser kestrel (Falco naumanni) on nest, on barn roof, Lleida, Spain, April.

Roy Mangersnes / Male Lesser kestrel (Falco naumanni) in flight over a barn roof, Lleida, Spain, April.

Roy Mangersnes / Male Lesser kestrel (Falco naumanni) with wings outstretched on a barn roof, Lleida, Spain, April.

Roy Mangersnes / Male Lesser Kestrel (Falco naumanni) displaying, on a barn roof, Lleida, Spain, April.

Roy Mangersnes / Male Lesser kestrel (Falco naumanni) on a barn roof, Lleida, Spain, April.

Markus Varesvuo / Lesser Kestrel (Falco naumanni) in flight, Spain April

Markus Varesvuo / Lesser Kestrel (Falco naumanni) in flight, Spain April

Markus Varesvuo / Lesser Kestrel (Falco naumanni) underside view of adult in flight, Spain April

Markus Varesvuo / Lesser Kestrel (Falco naumanni) in flight, Spain April

Markus Varesvuo / Lesser Kestrel (Falco naumanni) in flight, Spain April

Loic Poidevin / Lesser kestel (Falco naumanni) nesting amongst roof tiles, Extremadura, Spain, June

Eric Medard / Lesser kestrel (Falco naumanni) male and female mating on top of roof, Spain, April

Eric Medard / Lesser kestrel (Falco naumanni) male and female mating on top of roof, Spain, April

Eric Medard / Lesser kestrel (Falco naumanni) male passing prey gift to female pre-mating, part of courtship, on rooftop, Spain, April

Eric Medard / Lesser kestrel (Falco naumanni) male and female mating on building roof, Spain, May

Eric Medard / Lesser kestrel (Falco naumanni) male and female mating on building roof, Spain, May

Eric Medard / Lesser kestrel (Falco naumanni) male flies in with lizard in beak, as pre-mating gift for female, part of courtship, Spain, May

Eric Medard / Lesser kestrel (Falco naumanni) male flying with a lizard in the beak, Spain

Eric Medard / Lesser kestrel (Falco naumanni) male arrives with a lizard to give to female as pre-mating gift, part of courtship, Spain, May

Eric Medard / Lesser kestrel (Falco naumanni) male gives a cockroach to the female, pre-mating gift, part of courtship, Spain, May

Eric Medard / Lesser kestrel (Falco naumanni) male and female mating on building roof, Spain, May

Eric Medard / Lesser kestrel (Falco naumanni) male and female mating on building roof, Spain, May