Where do Blue Grosbeaks live?

How can you tell a male bluebird from a female bluebird?

If you just want to be able to tell a male bluebird from a bluebird female, that’s easier to do if you’re looking at a mountain or western bluebird through your binoculars. When it comes to eastern bluebirds, the differences between males and females are more subtle. If you dipped a male bluebird in bleach, it would look like a female.

What does a female bluegill look like?

Females; Spring 2 photos and Summer. The Male And Female Colors. Bluegills have a very distinctive coloring, with deep blue, green, and purple on the face and gill flap, dark olive-colored bands down the side, and a fiery orange to yellow belly.

What is the difference between a male and female bear?

Female bears are shorter, stockier, and leaner in stature, in contrast to the males. Adult bears have much more heavily muscled shoulders, heads & necks than their female counterparts. The head of the male bear is much rounder and broader when compared with the female bears. The ears of the female bears are generally more prominent than the males.

What are bluegill colonies like?

For those of you who happen to be interested in birds, bluegill colonies are very much like the “leks” or dancing grounds for birds such as prairie chickens or sharp-tailed grouse. Most Pond Boss readers probably recognize the most common reproductive strategy used by male bluegills. They are called “parental males.”

How can you tell the gender of a black bear?

The way the bear urinates is a helpful feature in determining gender. A male black bear has its urine stream coming underneath the belly. When the female urinates, the urine streams out from the back or from a squatting position. The size of the bear is simple to identify the gender of the bear roaming in the forest.

How much does a bear weigh?

The weight of the adult females is between 130-180kg, with males weighing between 180-360 kg. Female bears have much shorter legs and are a bit shorter in appearance. During the mating season in May-June, the walk of the male bears becomes a swagger, with their legs moving further than their normal position.

Are bluegill solitary or in pairs?

Always solitary. For those of you who happen to be interested in birds, bluegill colonies are very much like the “leks” or dancing grounds for birds such as prairie chickens or sharp-tailed grouse. Most Pond Boss readers probably recognize the most common reproductive strategy used by male bluegills.

Do bluegill have a hierarchy in their nests?

Bigger bluegill dominate nests within a spawning colony. There is some evidence of an actual hierarchy in nest sites, with the most “dominant” males getting the most desirable central nests and being most likely to attract a female for spawning.

How do bluegill fish reproduce?

Most Pond Boss readers probably recognize the most common reproductive strategy used by male bluegills. They are called “parental males.” Adult male bluegills develop a large black tab on the back of their gill cover. Kayla Condello is holding a big parental male bluegill on the cover of the March/April 2005 Pond Boss.

How big can a grizzly bear get?

In fact, the largest brown bear subspecies can reach nearly 1,700 pounds – that’s nearly a refrigerator heavier than a polar bear! Grizzly bears also have larger paws, with many males sporting mittens up to 15 inches in diameter.

How much does a newborn polar bear weigh?

Newborn polar bears typically weigh around 1.5 pounds, with males sometimes weighing a bit more than females. To put things in perspective, 4-7 newborn polar bears weigh as much as one average human infant, between 5.5-10 pounds. Newborn polar bears are small, cute, and tiny enough to hold one of them in just one palm of your hand.

How can you tell a male from a female black bear?

Until boars start approaching adult weights at 7-9 years old, it can be very tough to tell them from sows. Female black bears have broad heads and narrow muzzles. Females’ faces are slender and more pointed than males. The smaller the ears look and the farther apart they seem, the better the bear.

Why do male bluegill mimic female bluegills?

These males actually adopt the coloration of a female bluegill. When a parental male is spawning with a female, the female mimic will approach the female from the opposite side, and release milt to fertilize some of the eggs. The parental male does not chase away this female mimic, likely because of the female coloration pattern.

What is a parental male bluegill?

Most Pond Boss readers probably recognize the most common reproductive strategy used by male bluegills. They are called “parental males.” Adult male bluegills develop a large black tab on the back of their gill cover. Kayla Condello is holding a big parental male bluegill on the cover of the March/April 2005 Pond Boss. By the way, what a smile, eh?

How do bluegill fish defend themselves?

They can also spread out their large pectoral fins to stop on a near-dime. Male bluegills during the breeding season are the most colorful variation of bluegill. Females can lay up 60,000 eggs. Bluegills create beds (nests) in very shallow water and defend them aggressively against all threats.

Do bluegill have a gender hierarchy?

Bigger bluegill dominate nests within a spawning colony. There is some evidence of an actual hierarchy in nest sites, with the most “dominant” males getting the most desirable central nests and being most likely to attract a female for spawning. “Cuckold males” actually come in two varieties.

How long does it take for a bluegill to grow up?

Age: Like most fish, bluegill can take several years before they reach their full size. Because the average bluegill lives to be from 4 to 11 years of age, you will likely have a range of different sized bluegill in your pond over time. Room to grow: Fish need plenty of room to grow, which means it’s essential not to overcrowd your pond or lake.

How do bluegills mate and reproduce?

When spawning begins, male bluegills will chase female bluegills through the water, lure them into breeding sites. Once a male has attracted a female to a particular place, he will dig out depressions for eggs and then fertilize them with milt (the male Bluegill’s sperm).

What is the average weight of a bear?

The average weight of adult male bears from 19 populations, from around the world and various subspecies (including both large- and small-bodied subspecies), was found to be 217 kg (478 lb) while adult females from 24 populations were found to average 152 kg (335 lb).

Why do brown bears vary in size and weight?

This is in part due to sexual dimorphism, as male brown bears average at least 30% larger in most subtypes. Individual bears also vary in size seasonally, weighing the least in spring due to lack of foraging during hibernation, and the most in late fall, after a period of hyperphagia to put on additional weight to prepare for hibernation.

What is the average size of a Asiatic bear?

Asiatic Black Bears are medium-sized bears with an average height of 4.5 to 5.4 feet (137.16 to 164.59 cm), and a weight of 198 to 254 pounds (89.81 to 115.21 kg). Males are usually bigger and heavier than females, reaching up to 400 pounds (181.43 kg).

What is the gestation period of a polar bear?

The polar bear gestation period is 8 months, though the development of the embryo is about 4 months. The gestation period includes delayed implantation, an evolutionary strategy in which the blastocyst simply floats in the uterus and does not implant in the uterine wall until conditions are optimal for its survival.