parus

Parus ( meaning Sail), also Tsyklon-B or Tsiklon-B ( meaning Cyclone-B) and Tsikada-M ( meaning Cicada-M), GRAU index 11F627, is a Russian, previously Soviet satellite constellation used for communication and navigation. As of 2010, 99 Parus satellites have been launched, starting with Kosmos 700 in 1974.

Natal dispersal and personalities in great tits (Parus major)
Territory and Breeding Density in the Great Tit, Parus Major L.
Nestling Weight and Survival in Individual Great Tits (Parus major)
Activity patterns of parent Great Tits Parus major feeding their young during rainfall
The costs of egg production and incubation in great tits (Parus major).
Population Fluctuations and Clutch-Size in the Great Tit, Parus major L.
Warmer springs lead to mistimed reproduction in great tits (Parus major).
A Comparative Sudy of the Breeding Ecology of the Great Tit Parus major in Different Habitats
Local Specialization and Maladaptation in the Mediterranean Blue Tit (Parus caeruleus)
Are avian blood parasites pathogenic in the wild? A medication experiment in blue tits (Parus caeruleus)