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Tag Archives: Development

Eaglet Growth and Development: Week Three

April 12, 2021 RaptorResource

We’re writing a series of blogs about the first few weeks of an eaglet’s life. An eaglet spends roughly 75 to 80 days in the nest. For about the first half, it grows and gains weight. For about the second half, it grows flight feathers and starts developing the skills it will need post-fledge. We will focus on week three in this blog. DN13 and DN14 are 18 and 16 days old. During week two (seven to 14 days), the

April 7, 2021: Clown Clompers and Ch-Ch-Ch-Changes!

April 7, 2021 RaptorResource

Do you like eaglet clown clompers? We love them! DN13 and DN14 seem to have gone from little dandelion bobbleheads to great big clown clompers almost over night. Their gray wooly thermal down is coming in, their little wings are sporting feather fringes, and they are flexing their rapidly growing feet and tiny talons. Motoring is limited to crawling, but they manage to explore outside the nest cup and find new places to hike outside the confines of the parental

Eaglet Growth and Development, Week Two

April 5, 2021 RaptorResource

We’re writing a series of blogs about the first few weeks of an eaglet’s life. An eaglet spends roughly 75 to 80 days in the nest. For about the first half, it grows and gains weight. For about the second half, it grows flight feathers and starts developing the skills it will need post-fledge. We will focus on week two in this blog. In their second week of development, the eaglets will gain roughly two pounds, experience rapid growth in

Eaglet Growth and Development: Week One

March 26, 2021 RaptorResource

We’re writing a series of blogs about the first few weeks of an eaglet’s life. An eaglet spends roughly 75 to 80 days in the nest. For about the first half, it grows and gains weight. For about the second half, it grows flight feathers and starts developing the skills it will need post-fledge. We will focus on week one in this blog. What can we expect in the first week following hatching? Like humans, growing eaglets have developmental milestones.

Peek inside a bald eagle egg: 4 days!

February 23, 2021 RaptorResource

As of this writing, we’re still waiting for eggs at Fort St. Vrain. The second Decorah North egg is three days and 22 hours old. What do embyronic eagles look they look like as they develop and grow inside their eggs? Dr. Peter Sharpe from the Institute for Wildlife Studies developed a table of bald eagle embryonic development based on work done by Hamburger and Hamilton (1951). While not all bald eagle eggs hatch in 35 days, the stages of development