House Sparrow

Passer domesticus
Quite a dapper fellow
Older male has black bill, and black bib
Younger male with black bill but only faint bib
Back of male warm brown and black
European form more colorful
Beige eye line in female; plumage in lighter shades of brown
Back less contrasty than male
Male feeding female as part of courtship; monogamous for life for most part
Male with nest material
Usual clutch 1 to 8 eggs
Female with insect for nestling
Waiting for next food delivery
Male with grub for nestling
Fledgling calling for food
Female feeding fledgling
Bagel fed to young, in NYC of course
Likely male but plumage incomplete
Bill still pink but male plumage apparent

Species account to come.