If a robin survives to midwinter, it lives an average of 1.7 years after that. The oldest robins in your yard might be about six years old, although one banded bird lived almost 14 years. [sounds of winter wind ] So in a dozen years you've probably had at least a half-dozen robins of each sex involved in nesting.
http://birdnote.org/show/how-long-does-robin-live
Over a species' range all of these factors could vary so the life expectancy would be different. For example, the average age of magpies in the countryside is 2.3 years but in urban areas 3.8 years. Most common garden birds have an average age of between 2 and 5 years. However, the maximum lifespan recorded for many of these birds is much higher. For example, the average age of a blue tit is 2.7 years but the oldest recorded was over 21 years old.
http://www.rspb.org.uk/birds-and-wildlife/bird-and-wildlife-guides/ask-an-expert/previous/gardenbirdage.aspx
Listed below are some estimated life spans for common parrots and other pet birds. These are, of course, based on having a healthy bird kept under ideal conditions. In reality, there is a wide range in the age that pet birds might reach, and certainly some will live longer than the ages listed below: Budgies: 15 years. Macaws: 60 years. Doves and Pigeons: 20 years. Macaws: 50-100+. Cockatoos: 40-60+.
https://www.thespruce.com/how-long-do-parrots-and-other-pet-birds-live-1238433
For robins, it's around 50% each year once young birds have fledged. If a robin survives to midwinter, it lives an average of 1.7 years after that. The oldest robins in your yard might be about six years old, although one banded bird lived almost 14 years. Robins don't maintain their pair bonds over the winter, so they mate anew each spring.
http://birdnote.org/show/how-long-does-robin-live
Seagulls live anywhere between 5 to 15 years depending on their environment and predators. The average is probably closer to 7 to 10 years. Some individual gulls have been known to live over 25 years. + 44 others found this useful.
http://www.answers.com/Q/How_long_do_seagulls_live_for
The large species take up to four years to attain full adult plumage, but two years is typical for small gulls. Large white-headed gulls are typically long-lived birds, with a maximum age of 49 years recorded for the herring gull. Gulls nest in large, densely packed noisy colonies. They lay two or three speckled eggs in nests composed of vegetation.
https://en.wikipedia.org/wiki/Gull
Question 4 How fast do gulls fly? According to a Stanford research team who investigated how fast birds in general fly; “For example, a gull whose most efficient loiter airspeed was 22 mph (35 kph) could fly at anything between 15 and 28 mph (24 and 45 kph) without increasing its metabolic rate more than 15 percent.”. Stanford University Report.
http://www.spwickstrom.com/gullfaq/
Heermann's Gulls are a medium sized gull. The adults have a body length that is roughly 18-21 inches (46-53 cm) in length, and a wingspan of 41-45 inches (104-115 cm). They have gray bodies, blackish-gray wings and tail feathers and a red bill with a black tip.
http://www.spwickstrom.com/seagull/
This small gull has an adult body that is roughly 17 inches (45 cm) in length with a wingspan of 35-40 inches (90-100 cm). This gull has a dark gray to black head and bill, a white neck, gray body and wings, and bright orange-red legs and feet.
http://www.spwickstrom.com/seagull/
Common black headed gulls (larus ridibundus) The Black Headed Gull adults are roughly 13-17 inches (33-44cm) in length with a 35-41 inch (89-105 cm) wingspan. The summer adult has a chocolate-brown head (not black, despite the name), the body and wings are pale grey, with black tips on the primary wing feathers.
http://www.spwickstrom.com/seagull/
how long do seagulls live
Seagulls live for 7 to 10 years.