Big Twitch: One Man, One Continent, a Race Against Time-A by Sean Dooley

By Sean Dooley

As a self-proclaimed twitcher—a birdwatching extremist who travels round the kingdom attempting to capture a glimpse of as many species of birds as possible—the writer took a yr off in 2002 with the target of seeing seven-hundred birds and thereby breaking the nationwide checklist for many birds noticeable in a single 12 months. during this fun memoir, he recounts his quest, together with how he spent all of his inheritance from the premature demise of his mom and dad to make his dream a fact. Populated by way of strange characters and engaging species of birds, this half confessional–part travelogue for either poultry nerds and the overall inhabitants follows the writer as he works out what it capability to be basic regardless of his surprisingly avid compulsion towards twitching.

Show description

Read or Download Big Twitch: One Man, One Continent, a Race Against Time-A True Story about Birdwatching PDF

Best animals books

The Artist's Guide to Drawing Animals: How to Draw Cats, Dogs, and Other Favorite Pets

During this step by step how-to consultant to making vintage graphics of animals in pencil and pen-and-ink, artist J. C. Amberlyn combines her love of pets and different customary family creatures along with her attractive, specified drawing type. protecting quite a few animals from canine and cats to barnyard critters like cows and sheep and plenty of extra, the ebook covers each species with easy-to-follow directions for drawing them from each perspective that you can imagine.

Wild New York: Der Naturreiseführer durch die Metropole

Kapitel 1 Mittelpunkt big apple Kapitel 2 giant Apples Vorgeschichte. 17 Kapitel three Unbekannte Nachbarschaft - Die Lebensräume der Stadt. 33 Kapitel four New Yorks Tierwelt . . forty nine Kapitel five Wurzeln schlagen in ny - Die Pflanzen der Stadt . . seventy five Kapitel 6 Rätselhafte Rituale - New Yorks Naturphänomene .

The Last of the Market Hunters

Duck searching has replaced tremendously because the days of limitless duck kills, because the restrict of 50 geese an afternoon tested in 1902 has fallen to the current 3. a valid hunter now, Dale Hamm discovered the paintings of industry hunting—taking waterfowl out of season and promoting them to restaurants—from his father throughout the l920s.

Extra resources for Big Twitch: One Man, One Continent, a Race Against Time-A True Story about Birdwatching

Sample text

5–2 h but its mode of transport in the blood provides some protection against its degradation and hence provides a ‘store’ of cortisol (Barnett, 2003). It is partitioned in the blood in three ways. Between 60% and 80% of the total cortisol is bound to albumin, which has a low affinity but a high capacity, meaning that while it is weakly bound, a considerable amount can be bound. From 10% to 20% is bound to transcortin or corticosteroid binding globulin, which has a high affinity but low capacity, meaning that it binds a small amount but strongly (Westphal, 1971).

Thus, the focus of Fig. 4. A pregnant sow exhibiting the stereotypy of bar biting. Farm Animal Welfare 37 the welfare concept of biological functioning extends to the consequences of the stress response (and other adaptive responses, such as behaviour) rather than the response per se. Acute stress responses can occur to pleasant as well as unpleasant stimuli and this is often used to criticize the use of corticosteroids to measure stress. , 1974) and voluntary exercise in humans (Sutton and Casey, 1975) both result in increased plasma corticosteroid concentrations.

In other words, increased basal secretion of corticosteroids has significant fitness consequences for the animal, and it is these biological and fitness effects that reflect both the magnitude of the stress response and the welfare implications. While the role and actions of corticosteroids in acute and chronic stress responses are well known, this is not to imply that the HPA axis is the only neuroendocrine axis affected by stressors. There is also involvement of the somatotrophic and thyroid axes and of other hypothalamic and pituitary hormones such as arginine vasopressin and prolactin, respectively.

Download PDF sample

Rated 4.64 of 5 – based on 7 votes