+
Handout
PBS

Pbs: Parenthood (Birds)

For Students 9th - 10th
This article from the companion site to "The Life of Birds" by PBS is full of examples of parenting birds. There is astonishing variety in nest building, offspring rearing, care, and even manipulation and deceit.
+
Handout
Other

Ornithology: Avian Development

For Students 9th - 10th
A good page devoted to the development process of birds. Discusses the incubating process and the stages of development.
+
Handout
Other

Ornithology: Avian Reproduction

For Students 9th - 10th
Provides a good discussion of the reproductive behaviors and systems of birds. Contains information on everything from nests to incubation times.
+
Handout
University of Pittsburgh

Univ. Of Pittsburgh/seasonal Decline in Tree Sparrow

For Students 9th - 10th
A HIGH level science article written about the change in clutch size through a mating season and the possible science base for this phenomena.