A week late and so it goes.

As autumn deepens, my walk home is coinciding with sunset.

I had a little post about gulls published on Jerry Coyne’s blog today: Reader’s Wildlife Photos

With fall migration underway, many species of birds are passing down the Pacific flyway to winter further south – some as far as Central or even South America.

It struck me earlier this week how poor my knowledge of both Central and South America is, so I spent a little time studying their geography. Political borders aside, what I really wanted to learn about were the ecoregions… the ecosystems that support these birds.

I also couldn’t help going back in time – deep time and evolutionary biology are two intertwined obsessions of mine – to learn more about the Great American Biotic Interchange.

It’s been a strange week and I seem to have gotten lost in between the last days of summer and the first days of autumn. Finding this Pacific Tree Frog helped me briefly escape the idiocy of the world we’ve built for ourselves.