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4-Day Bird Tour round Britain

The first real book from the British Bird Tours publishing house has hit the cybershelves. Here’s an extract:

“Effectively in the centre of one of the world’s biggest cities, a visit to Regent’s Park can yield an astonishing average of 45 species. True to the capital’s cosmopolitan nature, the highlights tend to be foreign species that have made London their home. Rose-ringed parakeets, more…

Endangered Species & Biodiversity

Two days focussed on our relentless rubbing out of anything on the planet that gets in our way. Today, it’s an American celebration (sic) of disappearing wildlife and open space. Tomorrow, pretty much the same thing, but international.

Even if we stopped now, could the world bounce back? What am I saying? Too few people care [...]

High Tide, Redux

Further to my ignorance about the highest tides, a lively debate has ensued on BirdForum. Maybe not the ideal platform but here’s our understanding as I understand it.

Several factors determine the tide’s height. Yes, proximity of the Sun is one. Newton’s calculation for gravity, by which the Sun (or the Moon) pulls Earth’s oceans, has the pull grow as the distance shrinks between two bodies. It grows proportional to the square of this distance. So, more…