Kod lastavica izgleda da mužijaci ne leže na jajima, samo čuvaju gnezdo.
Code:
Tachycineta bicolor, The Tree Swallow
Citat:
The incubation period is 14 to 15 days. Females incubate the eggs, but males will guard the nests when females are absent. The young are fed soon after they hatch, and both parents share this duty equally. In situations where one adult has disappeared, a single parent can raise the young alone. Nevertheless, retarded nestling growth, brood reduction, and starvation are typical outcomes. Fecal sacs are removed from the nest until the young are 14 days old. Nestlings fledge after 16 to 30 days, and many are virtually independent immediately upon their departure.
Možda ova lasta pripada nekoj drugoj podvrsti, ne znam...
Pogledaj i ovo udruženje:
http://www.ptica.org i
http://rescue.zoopalic.co.rs//index.php?lang=srb
Na kraju ipak, Prirodna selekcija će se pobrinuti za sve...