Ключевые слова: animal, animals, avian, back, biodiversity, bird, birds, color, colour, corvid, corvids, corvus albus, couple, crow, crows, dakar, fauna, flight, fly, nature, ornithology, pair, pied crow, pied crows, raven, ravens, senegal, species, take flight, take off, taking flight, taking off, two, urban, vertebrate, vertebrates, wildlife, zoology,