Saturday, June 9, 2012

Birds: They Live Among Us

The barn swallows, tiny and demanding in their dried mud nest above the pool's gate during the Memorial Day weekend's opening ceremonies, have fledged.

It is thrilling that the parents came back and raised another family of six in the nest they built last year.

Hoping for a second family this season:

"There are normally two broods, with the original nest being reused for the second brood and being repaired and reused in subsequent years. Hatching success is 90% and the fledging survival rate is 70–90%. Average mortality is 70–80% in the first year and 40–70% for the adult.

-- Wikipedia:

Related: People at the bagel place discussing the similarities of modern ostriches and the dinosaur ancestors of birds.

"The Ornithomimosauria, ornithomimosaurs ("bird-mimic lizards") or ostrich dinosaurs[1] were theropod dinosaurs which bore a superficial resemblance to modern ostriches. They were fast, omnivorous or herbivorous dinosaurs from the Cretaceous Period of Laurasia (now Asia, Europe and North America)."

-- Wikipedia:

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