Just returned from East Texas a short while ago. Did some birdwatching of course but saw nothing exotic or unexpected, but I was struck by the difference in coloration in East Texas birds compared to those at my home in Northern California. The Blue Jays were a striking blue and black and white, making our […]
Are East Texas Birds Toxic? Read More »
A little lesson on ratites. A ratite is any bird whose sternum (breastbone) is smooth, or raftlike, because it lacks a keel which is required for the anchorage of the main flight muscles, so these are flightless birds The ratites include some of the largest birds of all time, such as the moa and the
The Ostrich is a Ratite Read More »
I’ve discussed the intelligence of birds like crows before. Let’s look a bit more into the subject in a little more scientific depth. Why do mammals like dogs, coyotes, cats, and horses learn all kinds of behaviors in the wild or from their trainers while birds mostly act by instinct? It mostly has to do
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A few years ago I received an email from someone in Hawaii wondering why so many pigeons on Maui were missing toes. I had no idea so I emailed the ornithologist at the University of Hawaii and she responded that with many people with long hair lying on the beaches leave bits of their tresses
I regularly receive reports of birds with unusual coloration. Often it is just partial albinism in which patches of white show up on the bird in various places, or incomplete albinism in which the eumelanin (dark pigment) is diluted instead of absent, so a dark bird might appear gray instead of black or tan instead
Unusual Coloration in Birds Read More »
Often I watch birds just for general relaxation; seeing them flit among branches or hop along the ground or tossing seeds in the air looking for the best parcel of food. But sometimes I focus intently and try to figure out what exactly a bird is doing, why it is doing it, and how its
From the Middle English meaning very small or Middle Dutch meaning small copper coin, we get the term mite. Mites are small arthropods (joint-legged animals like insects, crayfish, and spiders) belonging to the class Arachnida (spiders and allies). Most mites are tiny, less than 1 mm in length, and have a simple, unsegmented body plan. Their small size makes them easily
I’ve always known that birds’ eggs are pretty amazing structures. Encased in a shell with everything it needs to produce a new bird, an egg does so in 10 to 60 days, depending on the species. You can get an overview of the development of an egg here or a much more detailed discussion of
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According to Science Daily, May 23, 2019, warm blooded animals – birds and mammals – are getting smaller. That seems bizarre until you put some pieces together. Scientists have known about Bergmann’s Rule for many years. This “rule” is actually a general ecomorphological concept which says that as the environment gets colder, the body sizes
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Birds and mammals like us, are homeothermic. We often say “” is a misnomer as tuna and lizards and worms and tuna can be warm blooded at times. Better to say homeothermic which means which means that mammals and birds maintain a fairly constant body temperature at all times. To do that we have to
