Parasitic or Not?
Among the several species of birds that visit my backyard daily are the Common Grackles. These birds usually like to hang around for a while (until all food is finished!). Being part of the blackbirds family, as many of them are gregarious and generally fly in pairs or groups.
As most blackbirds are the Grackles also follow that natural instinct of being parasitic (lay their eggs in other species nests).
My question is: At what point do Grackles tend for their fledglings?. How is it that they get reunited?
I have a sequence of pictures shot a couple of days ago where it shows an adult female Grackle feeding a juvenile. I think that it serves as proof that they take care of their own young.
Mother Grackle
Daughter Grackle
Waiting for Mom
Asking for food
Feeding the baby
Transfer
Text and photographs © H.J. Ruiz – Avian 101
H.J. Ruiz - Avian101 
According to Cornell, Grackles are not parasitic. They build their own nests and the female incubates the eggs. I did learn something else – here in Illinois they manage up to two clutches. That explains the local population boom. I do know from personal observation that they are very opportunistic and adapt readily to human disturbance if they can capitalize on it. 🙂
Oops, realizing I didn’t quite answer your question. Also according to Cornell Grackles start feeding upon hatching, and as far as I can gather both parents participate. And the males have sometimes even been observed incubating. As for Cowbirds, they reject or attack cowbird eggs left in their nests and recognize female Cowbirds; therefore they have built up their own defense against parasitism.
Great observation and captures, HJ! Sweet shots!
Thank you for your comments Donna!:)