Bright red, yellow, orange, deep raspberry—and frankly flamboyant—winter finches are spectacular. These nomadic finches are irruptive migrants (in other words, unpredictable) and when their fuel ...
Natural selection at its most powerful winnowed certain finches harshly during a severe drought in 1977. That year, the vegetation withered. Seeds of all kinds were scarce. The small, soft ones ...
This will keep some species of northern finches out of our area. Some areas were affected by spruce budworms and tent caterpillars and those locations will have poor crops. Birds are moving out of ...
How do you know that finches' beak depth is heritable? You can see from Figure 2 that there is a correlation between the parents' and offsprings' beak size. How did the finch population change ...
Zebra finches (Taeniopygia guttata) are small (10g) songbirds native to the semi-arid regions of Australia and Timor. They are highly social, nesting colonially in groups of 20 to 1000, and are ...
Read the annual report of the Seabird Monitoring Programme, a BTO / JNCC / RSPB publication about the abundance and productivity of breeding seabird species in Britain and Ireland from 1986 to 2023.
Many other birds, including chickadees, cardinals and house finches, will eat safflower (and in the spring, the rose-breasted grosbeaks seem to seek out this seed). Sparrows will continue to visit ...