I was not be able to figure out the reason the death of baby bird. Thanks for your explanation.

@@cindyliu5608 here is journal reference with studies finding the inability of cowbird chicks survival in the nest of house finches. All studies and research found cowbird chicks death at 100% in the nests of house finches. The cowbird chick survived an average of 3.2 days in the house finch nests. sora.unm.edu/sites/default/files/journals/condor/v098n02/p0253-p0258.pdf

The Brown-headed and Bronzed Cowbirds tend to forage on similar diets, consisting primarily of vegetative foods and insects. In summer and during the breeding season they are particularly fond of a variety of insects and larvae, especially beetles, caterpillars, bugs, grasshoppers, and spiders. At these times of the year, insects provide for more than half of their overall intake. From late fall until the following spring, the cowbirds diets are mostly seeds. Seeds of dandelion, knotweed, ambrosia, and the grass Echinochloa are staples in their diet, yet they cherish yellow foxtail grass above all else. Yellow foxtail grass has been referred to as the cowbirds "staff of life". Fruits are an important, but minor, part of their diet. They seem to prefer blackberries, huckleberries, wild cherries, grapes, and cedar berries. In farmland areas, especially where the crops grown include corn, maize (milo), wheat, oats, barley and other grains, cowbirds tend to join larger mixed flocks of other blackbirds and starlings causing the farmers considerable grief. Large flocks can strip crops and reduce significantly the total yield. wildbirdsonline.com

@@jayhouse3149 if you read the referenced journal article I sited in one of the above responses the research findings were that the cowbird chick died 100% of the time when placed in the nest of the house finch. They use crop feeding with their chicks which isn’t a compatible style of feeding for the cowbird chicks. As the parent birds of more ideal nests evolve and are able to identify the cowbird eggs and remove them, the cowbird female tries to possibly find other bird species to place her eggs with. Obviously with sample expansion not all species of birds will be a compatible match which can be for various reasons at a whole. Cowbird numbers have been declining so new species testing by the cowbird parent seems to be warranted on the part of the female cowbird.

Brood parasitism. Basically another bird laid it's eggs in this finch nest. Seems to be cowbird eggs based on the spots. Cowbirds are a protected native species in the USA so it is actually illegal to remove their eggs from a nest if you find them. But even if it was legal, you shouldn't anyway as some cowbirds monitor their chicks in a nest and have been known to become hostile toward a nest if their chick dies and will attack the remaining eggs and chicks to ensure the nest fails.

Cowbirds will not survive if laid in the nest of seed eating birds. So the mother of these parasitic cowbird eggs made a bad choice…no wonder they are not surviving well. Robins had already evolved to identify and remove the parasite cowbird eggs on their own.

A cowbird probably layer her eggs in the finches nest. Cowbirds are known for laying her eggs in another species nest, that way they will be raised by the finch mom. Lazy bird lol

They are cowbird eggs but cowbirds will never survive in a finch nest. They will always end up choking to death by their method of feeding their chicks.

@@shannonspage9360What? Never heard of that! Many cowbirds have been raised by “foster “ parents. Otherwise how could there be so many around.?

@@susancrone1612 I tried posting a link to the journal article for the study. The title is “UNSUITABILITY OF THE HOUSE FINCH AS A HOST OF THE BROWN-HEADED COWBIRD” . The findings were 100% mortality of cowbird chick brood parasite when hosted by house finch

Eran 4 blancos y 2 pringuiados serian de la misma pajarita ?

No way of knowing till they get older, they all look pretty much alike. That may explain the missing 5th egg. If those 2 larger and differently colored egg were nest parasites, mama cowbird may have taken it, or the parents may have removed it if it didn't hatch.

Some birds lay the egg in the other bird's nest, you can google "Parasitic birds"

@@cindyliu5608 tendré que volver a ver el video porque no recuerdo si los pichones eran diferentes entre si

@@cindyliu5608 Are they cuckoo eggs ?

This is in America somewhere, they are cowbird eggs. Cowbirds will not survive in the nest of seed eating birds, like finches

Actually, one of the parent was always there. But when the bigger bird came, she/he fled away.

Glad you enjoyed it!

Emm ......... Sorry To Break U R Dreams But After The Female Dove Gives Birth The Male Leaves Her For Another Female 😐 And I Know Cuz I Have 28 pigeons So I 🕊 Pigeons/Doves